31946390696157 has 64 divisors (see below), whose sum is σ = 50529157754880. Its totient is φ = 17572380973056.

The previous prime is 31946390696089. The next prime is 31946390696159. The reversal of 31946390696157 is 75169609364913.

It is not a de Polignac number, because 31946390696157 - 2¹⁹ = 31946390171869 is a prime.

It is a partition number, being equal to the number of ways a set of 225 identical objects can be partitioned into subset.

It is a junction number, because it is equal to n+sod(n) for n = 31946390696091 and 31946390696100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31946390696159) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 217516894 + ... + 217663712.

It is an arithmetic number, because the mean of its divisors is an integer number (789518089920).

Almost surely, 2^{31946390696157} is an apocalyptic number.

31946390696157 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

31946390696157 is a deficient number, since it is larger than the sum of its proper divisors (18582767058723).

31946390696157 is a wasteful number, since it uses less digits than its factorization.

31946390696157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149850.

The product of its (nonzero) digits is 198404640, while the sum is 69.

The spelling of 31946390696157 in words is "thirty-one trillion, nine hundred forty-six billion, three hundred ninety million, six hundred ninety-six thousand, one hundred fifty-seven".