31315230224 has 40 divisors (see below), whose sum is σ = 62131356672. Its totient is φ = 15281884800.

The previous prime is 31315230217. The next prime is 31315230241. The reversal of 31315230224 is 42203251313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31315230193 and 31315230202.

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, 928049 + ... + 961199.

Almost surely, 2^31315230224 is an apocalyptic number.

It is an amenable number.

31315230224 is a deficient number, since it is larger than the sum of its proper divisors (30816126448).

31315230224 is a wasteful number, since it uses less digits than its factorization.

31315230224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34575 (or 34569 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 31315230224 its reverse (42203251313), we get a palindrome (73518481537).

The spelling of 31315230224 in words is "thirty-one billion, three hundred fifteen million, two hundred thirty thousand, two hundred twenty-four".