31220321122984 has 32 divisors (see below), whose sum is σ = 66900884817600. Its totient is φ = 13380098284800.

The previous prime is 31220321122973. The next prime is 31220321123011. The reversal of 31220321122984 is 48922112302213.

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, 26393712 + ... + 27551200.

It is an arithmetic number, because the mean of its divisors is an integer number (2090652650550).

Almost surely, 2^{31220321122984} is an apocalyptic number.

It is an amenable number.

31220321122984 is an abundant number, since it is smaller than the sum of its proper divisors (35680563694616).

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

31220321122984 is a wasteful number, since it uses less digits than its factorization.

31220321122984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639153 (or 1639149 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 31220321122984 in words is "thirty-one trillion, two hundred twenty billion, three hundred twenty-one million, one hundred twenty-two thousand, nine hundred eighty-four".