90031307 has 2 divisors, whose sum is σ = 90031308. Its totient is φ = 90031306.

The previous prime is 90031301. The next prime is 90031309. The reversal of 90031307 is 70313009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90031307 - 2¹² = 90027211 is a prime.

Together with 90031309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90031301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45015653 + 45015654.

It is an arithmetic number, because the mean of its divisors is an integer number (45015654).

Almost surely, 2^90031307 is an apocalyptic number.

90031307 is a deficient number, since it is larger than the sum of its proper divisors (1).

90031307 is an equidigital number, since it uses as much as digits as its factorization.

90031307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 90031307 is about 9488.4828608161. The cubic root of 90031307 is about 448.1924313496.

The spelling of 90031307 in words is "ninety million, thirty-one thousand, three hundred seven".