31220431102024 has 16 divisors (see below), whose sum is σ = 58620872936700. Its totient is φ = 15588198318912.

The previous prime is 31220431102001. The next prime is 31220431102031. The reversal of 31220431102024 is 42020113402213.

It can be written as a sum of positive squares in 2 ways, for example, as 22393887199524 + 8826543902500 = 4732218^2 + 2970950^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31220431102024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2752147987 + ... + 2752159330.

Almost surely, 2^{31220431102024} is an apocalyptic number.

It is an amenable number.

31220431102024 is a deficient number, since it is larger than the sum of its proper divisors (27400441834676).

31220431102024 is a wasteful number, since it uses less digits than its factorization.

31220431102024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504308032 (or 5504308028 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31220431102024 its reverse (42020113402213), we get a palindrome (73240544504237).

The spelling of 31220431102024 in words is "thirty-one trillion, two hundred twenty billion, four hundred thirty-one million, one hundred two thousand, twenty-four".