90323431 has 16 divisors (see below), whose sum is σ = 105815808. Its totient is φ = 76182400.

The previous prime is 90323413. The next prime is 90323449. The reversal of 90323431 is 13432309.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90323413) and next prime (90323449).

It is a cyclic number.

It is not a de Polignac number, because 90323431 - 2⁵ = 90323399 is a prime.

It is a super-2 number, since 2×90323431² = 16316644375223522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90323396 and 90323405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90323531) 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, 9876 + ... + 16678.

It is an arithmetic number, because the mean of its divisors is an integer number (6613488).

Almost surely, 2^90323431 is an apocalyptic number.

90323431 is a deficient number, since it is larger than the sum of its proper divisors (15492377).

90323431 is a wasteful number, since it uses less digits than its factorization.

90323431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6902.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 90323431 is about 9503.8640036566. The cubic root of 90323431 is about 448.6766570339.

The spelling of 90323431 in words is "ninety million, three hundred twenty-three thousand, four hundred thirty-one".