31942974940157 has 8 divisors (see below), whose sum is σ = 31983452069184. Its totient is φ = 31902501852288.

The previous prime is 31942974940153. The next prime is 31942974940169. The reversal of 31942974940157 is 75104947924913.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31942974940157 - 2² = 31942974940153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31942974940093 and 31942974940102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31942974940153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14968493 + ... + 16968845.

It is an arithmetic number, because the mean of its divisors is an integer number (3997931508648).

Almost surely, 2^{31942974940157} is an apocalyptic number.

It is an amenable number.

31942974940157 is a deficient number, since it is larger than the sum of its proper divisors (40477129027).

31942974940157 is a wasteful number, since it uses less digits than its factorization.

31942974940157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020579.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 31942974940157 in words is "thirty-one trillion, nine hundred forty-two billion, nine hundred seventy-four million, nine hundred forty thousand, one hundred fifty-seven".