100312031031 has 16 divisors (see below), whose sum is σ = 136029158400. Its totient is φ = 65738965248.

The previous prime is 100312031011. The next prime is 100312031107. The reversal of 100312031031 is 130130213001.

It is not a de Polignac number, because 100312031031 - 2⁵ = 100312030999 is a prime.

It is a super-2 number, since 2×100312031031² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100312031031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100312031011) 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, 424666 + ... + 617223.

It is an arithmetic number, because the mean of its divisors is an integer number (8501822400).

Almost surely, 2^100312031031 is an apocalyptic number.

100312031031 is a deficient number, since it is larger than the sum of its proper divisors (35717127369).

100312031031 is a wasteful number, since it uses less digits than its factorization.

100312031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042438.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 100312031031 its reverse (130130213001), we get a palindrome (230442244032).

The spelling of 100312031031 in words is "one hundred billion, three hundred twelve million, thirty-one thousand, thirty-one".