31442212424 has 32 divisors (see below), whose sum is σ = 67382397120. Its totient is φ = 13473988416.

The previous prime is 31442212397. The next prime is 31442212463. The reversal of 31442212424 is 42421224413.

It is a happy number.

It is a super-2 number, since 2×31442212424² (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 7 ways as a sum of consecutive naturals, for example, 842627 + ... + 879149.

It is an arithmetic number, because the mean of its divisors is an integer number (2105699910).

Almost surely, 2^31442212424 is an apocalyptic number.

It is an amenable number.

31442212424 is an abundant number, since it is smaller than the sum of its proper divisors (35940184696).

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

31442212424 is a wasteful number, since it uses less digits than its factorization.

31442212424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51909 (or 51905 counting only the distinct ones).

The product of its digits is 12288, while the sum is 29.

Adding to 31442212424 its reverse (42421224413), we get a palindrome (73863436837).

The spelling of 31442212424 in words is "thirty-one billion, four hundred forty-two million, two hundred twelve thousand, four hundred twenty-four".