90320319 has 16 divisors (see below), whose sum is σ = 140851200. Its totient is φ = 57044088.

The previous prime is 90320317. The next prime is 90320369. The reversal of 90320319 is 91302309.

It is not a de Polignac number, because 90320319 - 2¹ = 90320317 is a prime.

It is a super-2 number, since 2×90320319² = 16315520048523522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 90320292 and 90320301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90320311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87519 + ... + 88544.

It is an arithmetic number, because the mean of its divisors is an integer number (8803200).

Almost surely, 2^90320319 is an apocalyptic number.

90320319 is a deficient number, since it is larger than the sum of its proper divisors (50530881).

90320319 is a wasteful number, since it uses less digits than its factorization.

90320319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176091 (or 176085 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 90320319 is about 9503.7002793649. The cubic root of 90320319 is about 448.6715040786.

The spelling of 90320319 in words is "ninety million, three hundred twenty thousand, three hundred nineteen".