31930201357 has 4 divisors (see below), whose sum is σ = 31973176800. Its totient is φ = 31887225916.

The previous prime is 31930201349. The next prime is 31930201411. The reversal of 31930201357 is 75310203913.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31930201357 - 2³ = 31930201349 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 (31930201657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21486607 + ... + 21488092.

It is an arithmetic number, because the mean of its divisors is an integer number (7993294200).

Almost surely, 2^31930201357 is an apocalyptic number.

It is an amenable number.

31930201357 is a deficient number, since it is larger than the sum of its proper divisors (42975443).

31930201357 is an equidigital number, since it uses as much as digits as its factorization.

31930201357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42975442.

The product of its (nonzero) digits is 17010, while the sum is 34.

The spelling of 31930201357 in words is "thirty-one billion, nine hundred thirty million, two hundred one thousand, three hundred fifty-seven".