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203131201130300 = 225231139471411467
BaseRepresentation
bin101110001011111100101011…
…000101100000111100111100
3222122020011010122222022122202
4232023330223011200330330
5203111100144442132200
62000005104024331032
760533513345632562
oct5613745305407474
9878204118868582
10203131201130300
11597a6505467123
121a948230313a78
1389462617923a1
14382386172ba32
151873d96d071d5
hexb8bf2b160f3c

203131201130300 has 72 divisors (see below), whose sum is σ = 458287372730880. Its totient is φ = 78065738769600.

The previous prime is 203131201130279. The next prime is 203131201130323. The reversal of 203131201130300 is 3031102131302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235274834 + ... + 236136633.

It is an arithmetic number, because the mean of its divisors is an integer number (6365102399040).

Almost surely, 2203131201130300 is an apocalyptic number.

203131201130300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203131201130300 is an abundant number, since it is smaller than the sum of its proper divisors (255156171600580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203131201130300 is a wasteful number, since it uses less digits than its factorization.

203131201130300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471411651 (or 471411644 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 203131201130300 its reverse (3031102131302), we get a palindrome (206162303261602).

The spelling of 203131201130300 in words is "two hundred three trillion, one hundred thirty-one billion, two hundred one million, one hundred thirty thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 31 50 62 100 124 139 155 278 310 556 620 695 775 1390 1550 2780 3100 3475 4309 6950 8618 13900 17236 21545 43090 86180 107725 215450 430900 471411467 942822934 1885645868 2357057335 4714114670 9428229340 11785286675 14613755477 23570573350 29227510954 47141146700 58455021908 65526193913 73068777385 131052387826 146137554770 262104775652 292275109540 327630969565 365343886925 655261939130 730687773850 1310523878260 1461375547700 1638154847825 2031312011303 3276309695650 4062624022606 6552619391300 8125248045212 10156560056515 20313120113030 40626240226060 50782800282575 101565600565150 203131201130300