31955350973 has 12 divisors (see below), whose sum is σ = 39545761248. Its totient is φ = 25283353680.

The previous prime is 31955350939. The next prime is 31955350997. The reversal of 31955350973 is 37905355913.

It is a de Polignac number, because none of the positive numbers 2^k-31955350973 is a prime.

It is a super-2 number, since 2×31955350973² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31955350073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13504883 + ... + 13507248.

It is an arithmetic number, because the mean of its divisors is an integer number (3295480104).

Almost surely, 2^31955350973 is an apocalyptic number.

It is an amenable number.

31955350973 is a deficient number, since it is larger than the sum of its proper divisors (7590410275).

31955350973 is a wasteful number, since it uses less digits than its factorization.

31955350973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27012164 (or 27012151 counting only the distinct ones).

The product of its (nonzero) digits is 1913625, while the sum is 50.

The spelling of 31955350973 in words is "thirty-one billion, nine hundred fifty-five million, three hundred fifty thousand, nine hundred seventy-three".