100311312031 has 16 divisors (see below), whose sum is σ = 115335489024. Its totient is φ = 85461878304.

The previous prime is 100311312029. The next prime is 100311312061. The reversal of 100311312031 is 130213113001.

It is a cyclic number.

It is not a de Polignac number, because 100311312031 - 2¹ = 100311312029 is a prime.

It is a super-2 number, since 2×100311312031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100311311996 and 100311312014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100311312061) 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, 922566 + ... + 1025548.

It is an arithmetic number, because the mean of its divisors is an integer number (7208468064).

Almost surely, 2^100311312031 is an apocalyptic number.

100311312031 is a deficient number, since it is larger than the sum of its proper divisors (15024176993).

100311312031 is a wasteful number, since it uses less digits than its factorization.

100311312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103830.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 100311312031 its reverse (130213113001), we get a palindrome (230524425032).

The spelling of 100311312031 in words is "one hundred billion, three hundred eleven million, three hundred twelve thousand, thirty-one".