90366131 has 2 divisors, whose sum is σ = 90366132. Its totient is φ = 90366130.

The previous prime is 90366097. The next prime is 90366137. The reversal of 90366131 is 13166309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90366131 - 2¹⁸ = 90103987 is a prime.

It is a super-2 number, since 2×90366131² = 16332075263818322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90366094 and 90366103.

It is not a weakly prime, because it can be changed into another prime (90366137) by changing a digit.

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 as a sum of consecutive naturals, namely, 45183065 + 45183066.

It is an arithmetic number, because the mean of its divisors is an integer number (45183066).

Almost surely, 2^90366131 is an apocalyptic number.

90366131 is a deficient number, since it is larger than the sum of its proper divisors (1).

90366131 is an equidigital number, since it uses as much as digits as its factorization.

90366131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 90366131 is about 9506.1101929233. The cubic root of 90366131 is about 448.7473491928.

The spelling of 90366131 in words is "ninety million, three hundred sixty-six thousand, one hundred thirty-one".