31042120024 has 32 divisors (see below), whose sum is σ = 59957370000. Its totient is φ = 15058334592.

The previous prime is 31042120013. The next prime is 31042120049. The reversal of 31042120024 is 42002124013.

It is a super-2 number, since 2×31042120024² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31042119983 and 31042120010.

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, 251559 + ... + 354070.

Almost surely, 2^31042120024 is an apocalyptic number.

It is an amenable number.

31042120024 is a deficient number, since it is larger than the sum of its proper divisors (28915249976).

31042120024 is a wasteful number, since it uses less digits than its factorization.

31042120024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605827 (or 605823 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 31042120024 its reverse (42002124013), we get a palindrome (73044244037).

The spelling of 31042120024 in words is "thirty-one billion, forty-two million, one hundred twenty thousand, twenty-four".