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20012101310 = 2517196195697
BaseRepresentation
bin10010101000110100…
…000110111010111110
31220122200022002010102
4102220310012322332
5311441044220220
613105440441102
71305630024455
oct225064067276
956580262112
1020012101310
11853a344a03
123a66019192
131b6c053a86
14d7bb55b9c
157c1d5b775
hex4a8d06ebe

20012101310 has 32 divisors (see below), whose sum is σ = 40148123040. Its totient is φ = 7137441792.

The previous prime is 20012101309. The next prime is 20012101313. The reversal of 20012101310 is 1310121002.

It is a super-2 number, since 2×200121013102 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20012101291 and 20012101300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012101313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3094619 + ... + 3101078.

It is an arithmetic number, because the mean of its divisors is an integer number (1254628845).

Almost surely, 220012101310 is an apocalyptic number.

20012101310 is an abundant number, since it is smaller than the sum of its proper divisors (20136021730).

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

20012101310 is a wasteful number, since it uses less digits than its factorization.

20012101310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195740.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20012101310 its reverse (1310121002), we get a palindrome (21322222312).

The spelling of 20012101310 in words is "twenty billion, twelve million, one hundred one thousand, three hundred ten".

Divisors: 1 2 5 10 17 19 34 38 85 95 170 190 323 646 1615 3230 6195697 12391394 30978485 61956970 105326849 117718243 210653698 235436486 526634245 588591215 1053268490 1177182430 2001210131 4002420262 10006050655 20012101310