31231110100104 has 24 divisors (see below), whose sum is σ = 84584256521310. Its totient is φ = 10410370033344.

The previous prime is 31231110100067. The next prime is 31231110100111. The reversal of 31231110100104 is 40100101113213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18392518822500 + 12838591277604 = 4288650^2 + 3583098^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216882708957 + ... + 216882709100.

Almost surely, 2^{31231110100104} is an apocalyptic number.

It is an amenable number.

31231110100104 is an abundant number, since it is smaller than the sum of its proper divisors (53353146421206).

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

31231110100104 is a wasteful number, since it uses less digits than its factorization.

31231110100104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433765418069 (or 433765418062 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 31231110100104 its reverse (40100101113213), we get a palindrome (71331211213317).

The spelling of 31231110100104 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred ten million, one hundred thousand, one hundred four".