31223349988 has 24 divisors (see below), whose sum is σ = 58557546432. Its totient is φ = 14529312864.

The previous prime is 31223349967. The next prime is 31223350001. The reversal of 31223349988 is 88994332213.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

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, 4582870 + ... + 4589677.

It is an arithmetic number, because the mean of its divisors is an integer number (2439897768).

Almost surely, 2^31223349988 is an apocalyptic number.

It is an amenable number.

31223349988 is a deficient number, since it is larger than the sum of its proper divisors (27334196444).

31223349988 is a wasteful number, since it uses less digits than its factorization.

31223349988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9172611 (or 9172609 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The spelling of 31223349988 in words is "thirty-one billion, two hundred twenty-three million, three hundred forty-nine thousand, nine hundred eighty-eight".