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200311310231 = 618988741597
BaseRepresentation
bin1011101010001101111…
…1000000011110010111
3201011001001001212211222
42322203133000132113
511240214143411411
6232004410320555
720320621021004
oct2724337003627
9634031055758
10200311310231
1177a5157018a
12329a3a2915b
1315b7397a006
1499a359a8ab
1553259694db
hex2ea37c0797

200311310231 has 16 divisors (see below), whose sum is σ = 206119753920. Its totient is φ = 194589415680.

The previous prime is 200311310179. The next prime is 200311310263. The reversal of 200311310231 is 132013113002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-200311310231 is a prime.

It is a super-2 number, since 2×2003113102312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200311340231) 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, 4794725 + ... + 4836321.

It is an arithmetic number, because the mean of its divisors is an integer number (12882484620).

Almost surely, 2200311310231 is an apocalyptic number.

200311310231 is a deficient number, since it is larger than the sum of its proper divisors (5808443689).

200311310231 is an equidigital number, since it uses as much as digits as its factorization.

200311310231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42634.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 200311310231 its reverse (132013113002), we get a palindrome (332324423233).

The spelling of 200311310231 in words is "two hundred billion, three hundred eleven million, three hundred ten thousand, two hundred thirty-one".

Divisors: 1 61 89 887 5429 41597 54107 78943 2537417 3702133 4815523 36896539 225830113 2250688879 3283791971 200311310231