90031062 has 64 divisors (see below), whose sum is σ = 207028224. Its totient is φ = 25835040.

The previous prime is 90031043. The next prime is 90031087. The reversal of 90031062 is 26013009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192553 + ... + 193019.

It is an arithmetic number, because the mean of its divisors is an integer number (3234816).

Almost surely, 2^90031062 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90031062, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103514112).

90031062 is an abundant number, since it is smaller than the sum of its proper divisors (116997162).

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

90031062 is a wasteful number, since it uses less digits than its factorization.

90031062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 90031062 is about 9488.4699504188. The cubic root of 90031062 is about 448.1920247976.

The spelling of 90031062 in words is "ninety million, thirty-one thousand, sixty-two".