90031005697 has 4 divisors (see below), whose sum is σ = 90056220976. Its totient is φ = 90005790420.

The previous prime is 90031005689. The next prime is 90031005751. The reversal of 90031005697 is 79650013009.

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 90031005697 - 2³ = 90031005689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90031005497) 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, 12602283 + ... + 12609424.

It is an arithmetic number, because the mean of its divisors is an integer number (22514055244).

Almost surely, 2^90031005697 is an apocalyptic number.

It is an amenable number.

90031005697 is a deficient number, since it is larger than the sum of its proper divisors (25215279).

90031005697 is a wasteful number, since it uses less digits than its factorization.

90031005697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25215278.

The product of its (nonzero) digits is 51030, while the sum is 40.

The spelling of 90031005697 in words is "ninety billion, thirty-one million, five thousand, six hundred ninety-seven".