31224231204 has 48 divisors (see below), whose sum is σ = 73624252800. Its totient is φ = 10298534400.

The previous prime is 31224231193. The next prime is 31224231271. The reversal of 31224231204 is 40213242213.

It is a happy number.

It is a super-2 number, since 2×31224231204² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2153772 + ... + 2168220.

It is an arithmetic number, because the mean of its divisors is an integer number (1533838600).

Almost surely, 2^31224231204 is an apocalyptic number.

It is an amenable number.

31224231204 is an abundant number, since it is smaller than the sum of its proper divisors (42400021596).

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

31224231204 is a wasteful number, since it uses less digits than its factorization.

31224231204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16340 (or 16338 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31224231204 its reverse (40213242213), we get a palindrome (71437473417).

The spelling of 31224231204 in words is "thirty-one billion, two hundred twenty-four million, two hundred thirty-one thousand, two hundred four".