90323631 has 12 divisors (see below), whose sum is σ = 132679560. Its totient is φ = 59194800.

The previous prime is 90323621. The next prime is 90323633. The reversal of 90323631 is 13632309.

90323631 is a `hidden beast` number, since 9 + 0 + 3 + 23 + 631 = 666.

It is not a de Polignac number, because 90323631 - 2¹⁰ = 90322607 is a prime.

It is a super-2 number, since 2×90323631² = 16316716634048322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 90323595 and 90323604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90323633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84520 + ... + 85581.

It is an arithmetic number, because the mean of its divisors is an integer number (11056630).

Almost surely, 2^90323631 is an apocalyptic number.

90323631 is a deficient number, since it is larger than the sum of its proper divisors (42355929).

90323631 is a wasteful number, since it uses less digits than its factorization.

90323631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170166 (or 170163 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 90323631 is about 9503.8745256869. The cubic root of 90323631 is about 448.6769881966.

The spelling of 90323631 in words is "ninety million, three hundred twenty-three thousand, six hundred thirty-one".