31104234020 has 24 divisors (see below), whose sum is σ = 66551325624. Its totient is φ = 12206944256.

The previous prime is 31104234019. The next prime is 31104234037. The reversal of 31104234020 is 2043240113.

It can be written as a sum of positive squares in 4 ways, for example, as 209844196 + 30894389824 = 14486^2 + 175768^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 31104233983 and 31104234001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14670749 + ... + 14672868.

It is an arithmetic number, because the mean of its divisors is an integer number (2772971901).

Almost surely, 2^31104234020 is an apocalyptic number.

It is an amenable number.

31104234020 is an abundant number, since it is smaller than the sum of its proper divisors (35447091604).

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

31104234020 is a wasteful number, since it uses less digits than its factorization.

31104234020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29343679 (or 29343677 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31104234020 its reverse (2043240113), we get a palindrome (33147474133).

The spelling of 31104234020 in words is "thirty-one billion, one hundred four million, two hundred thirty-four thousand, twenty".