31104433031 has 16 divisors (see below), whose sum is σ = 35759522304. Its totient is φ = 26502481824.

The previous prime is 31104433021. The next prime is 31104433033. The reversal of 31104433031 is 13033440113.

It is not a de Polignac number, because 31104433031 - 2²² = 31100238727 is a prime.

It is a super-2 number, since 2×31104433031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31104432988 and 31104433006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31104433033) 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, 1677296 + ... + 1695738.

It is an arithmetic number, because the mean of its divisors is an integer number (2234970144).

Almost surely, 2^31104433031 is an apocalyptic number.

31104433031 is a deficient number, since it is larger than the sum of its proper divisors (4655089273).

31104433031 is a wasteful number, since it uses less digits than its factorization.

31104433031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19870.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31104433031 its reverse (13033440113), we get a palindrome (44137873144).

The spelling of 31104433031 in words is "thirty-one billion, one hundred four million, four hundred thirty-three thousand, thirty-one".