31130224232 has 16 divisors (see below), whose sum is σ = 60381900900. Its totient is φ = 15028384000.

The previous prime is 31130224199. The next prime is 31130224291. The reversal of 31130224232 is 23242203113.

It can be written as a sum of positive squares in 2 ways, for example, as 31128956356 + 1267876 = 176434^2 + 1126^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31130224198 and 31130224207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67090769 + ... + 67091232.

Almost surely, 2^31130224232 is an apocalyptic number.

It is an amenable number.

31130224232 is a deficient number, since it is larger than the sum of its proper divisors (29251676668).

31130224232 is a wasteful number, since it uses less digits than its factorization.

31130224232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134182036 (or 134182032 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31130224232 its reverse (23242203113), we get a palindrome (54372427345).

The spelling of 31130224232 in words is "thirty-one billion, one hundred thirty million, two hundred twenty-four thousand, two hundred thirty-two".