90731316 has 48 divisors (see below), whose sum is σ = 230053824. Its totient is φ = 27664896.

The previous prime is 90731309. The next prime is 90731323. The reversal of 90731316 is 61313709.

It is an interprime number because it is at equal distance from previous prime (90731309) and next prime (90731323).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15055 + ... + 20201.

It is an arithmetic number, because the mean of its divisors is an integer number (4792788).

Almost surely, 2^90731316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90731316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115026912).

90731316 is an abundant number, since it is smaller than the sum of its proper divisors (139322508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90731316 is a wasteful number, since it uses less digits than its factorization.

90731316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280 (or 5278 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 90731316 is about 9525.2987354728. The cubic root of 90731316 is about 449.3510250137.

It can be divided in two parts, 907 and 31316, that added together give a palindrome (32223).

The spelling of 90731316 in words is "ninety million, seven hundred thirty-one thousand, three hundred sixteen".