31115504001 has 4 divisors (see below), whose sum is σ = 41487338672. Its totient is φ = 20743669332.

The previous prime is 31115503999. The next prime is 31115504009. The reversal of 31115504001 is 10040551113.

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 not a de Polignac number, because 31115504001 - 2¹ = 31115503999 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31115504009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5185917331 + ... + 5185917336.

It is an arithmetic number, because the mean of its divisors is an integer number (10371834668).

Almost surely, 2^31115504001 is an apocalyptic number.

It is an amenable number.

31115504001 is a deficient number, since it is larger than the sum of its proper divisors (10371834671).

31115504001 is a wasteful number, since it uses less digits than its factorization.

31115504001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10371834670.

The product of its (nonzero) digits is 300, while the sum is 21.

The spelling of 31115504001 in words is "thirty-one billion, one hundred fifteen million, five hundred four thousand, one".