31220233297 has 12 divisors (see below), whose sum is σ = 34428275728. Its totient is φ = 28289547000.

The previous prime is 31220233271. The next prime is 31220233307. The reversal of 31220233297 is 79233202213.

It is not a de Polignac number, because 31220233297 - 2⁷ = 31220233169 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (31220233897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383079 + ... + 457372.

Almost surely, 2^31220233297 is an apocalyptic number.

It is an amenable number.

31220233297 is a deficient number, since it is larger than the sum of its proper divisors (3208042431).

31220233297 is a wasteful number, since it uses less digits than its factorization.

31220233297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840780 (or 840769 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The spelling of 31220233297 in words is "thirty-one billion, two hundred twenty million, two hundred thirty-three thousand, two hundred ninety-seven".