31371157201 has 4 divisors (see below), whose sum is σ = 31458542400. Its totient is φ = 31283772004.

The previous prime is 31371157199. The next prime is 31371157219. The reversal of 31371157201 is 10275117313.

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 31371157201 - 2¹ = 31371157199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31371155201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43692061 + ... + 43692778.

It is an arithmetic number, because the mean of its divisors is an integer number (7864635600).

Almost surely, 2^31371157201 is an apocalyptic number.

It is an amenable number.

31371157201 is a deficient number, since it is larger than the sum of its proper divisors (87385199).

31371157201 is an equidigital number, since it uses as much as digits as its factorization.

31371157201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87385198.

The product of its (nonzero) digits is 4410, while the sum is 31.

The spelling of 31371157201 in words is "thirty-one billion, three hundred seventy-one million, one hundred fifty-seven thousand, two hundred one".