90083085431 has 2 divisors, whose sum is σ = 90083085432. Its totient is φ = 90083085430.

The previous prime is 90083085427. The next prime is 90083085503. The reversal of 90083085431 is 13458038009.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90083085431 - 2² = 90083085427 is a prime.

It is a super-2 number, since 2×90083085431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90083085031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45041542715 + 45041542716.

It is an arithmetic number, because the mean of its divisors is an integer number (45041542716).

Almost surely, 2^90083085431 is an apocalyptic number.

90083085431 is a deficient number, since it is larger than the sum of its proper divisors (1).

90083085431 is an equidigital number, since it uses as much as digits as its factorization.

90083085431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 90083085431 in words is "ninety billion, eighty-three million, eighty-five thousand, four hundred thirty-one".