90312113 has 8 divisors (see below), whose sum is σ = 91410432. Its totient is φ = 89220096.

The previous prime is 90312107. The next prime is 90312137. The reversal of 90312113 is 31121309.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90312113 - 2⁶ = 90312049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90312193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31256 + ... + 34022.

It is an arithmetic number, because the mean of its divisors is an integer number (11426304).

Almost surely, 2^90312113 is an apocalyptic number.

It is an amenable number.

90312113 is a deficient number, since it is larger than the sum of its proper divisors (1098319).

90312113 is a wasteful number, since it uses less digits than its factorization.

90312113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 90312113 is about 9503.2685429804. The cubic root of 90312113 is about 448.6579157377.

The spelling of 90312113 in words is "ninety million, three hundred twelve thousand, one hundred thirteen".