31346890973 has 6 divisors (see below), whose sum is σ = 33083561214. Its totient is φ = 29697054264.

The previous prime is 31346890963. The next prime is 31346890979. The reversal of 31346890973 is 37909864313.

It can be written as a sum of positive squares in only one way, i.e., 31209462244 + 137428729 = 176662^2 + 11723^2 .

It is not a de Polignac number, because 31346890973 - 2¹⁶ = 31346825437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31346890979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43416386 + ... + 43417107.

It is an arithmetic number, because the mean of its divisors is an integer number (5513926869).

Almost surely, 2^31346890973 is an apocalyptic number.

It is an amenable number.

31346890973 is a deficient number, since it is larger than the sum of its proper divisors (1736670241).

31346890973 is an equidigital number, since it uses as much as digits as its factorization.

31346890973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86833531 (or 86833512 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 53.

The spelling of 31346890973 in words is "thirty-one billion, three hundred forty-six million, eight hundred ninety thousand, nine hundred seventy-three".