31980791227 has 16 divisors (see below), whose sum is σ = 39877362432. Its totient is φ = 24916842720.

The previous prime is 31980791207. The next prime is 31980791239. The reversal of 31980791227 is 72219708913.

It is a de Polignac number, because none of the positive numbers 2^k-31980791227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31980791207) 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 15 ways as a sum of consecutive naturals, for example, 687973 + ... + 732985.

It is an arithmetic number, because the mean of its divisors is an integer number (2492335152).

Almost surely, 2^31980791227 is an apocalyptic number.

31980791227 is a deficient number, since it is larger than the sum of its proper divisors (7896571205).

31980791227 is a wasteful number, since it uses less digits than its factorization.

31980791227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54258.

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 31980791227 in words is "thirty-one billion, nine hundred eighty million, seven hundred ninety-one thousand, two hundred twenty-seven".