31224130424 has 32 divisors (see below), whose sum is σ = 62511419520. Its totient is φ = 14585990496.

The previous prime is 31224130417. The next prime is 31224130433. The reversal of 31224130424 is 42403142213.

It is a junction number, because it is equal to n+sod(n) for n = 31224130393 and 31224130402.

It is a congruent number.

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, 1965302 + ... + 1981125.

It is an arithmetic number, because the mean of its divisors is an integer number (1953481860).

Almost surely, 2^31224130424 is an apocalyptic number.

It is an amenable number.

31224130424 is an abundant number, since it is smaller than the sum of its proper divisors (31287289096).

31224130424 is a wasteful number, since it uses less digits than its factorization.

31224130424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946499 (or 3946495 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31224130424 its reverse (42403142213), we get a palindrome (73627272637).

The spelling of 31224130424 in words is "thirty-one billion, two hundred twenty-four million, one hundred thirty thousand, four hundred twenty-four".