90803533631 has 4 divisors (see below), whose sum is σ = 95582667000. Its totient is φ = 86024400264.

The previous prime is 90803533589. The next prime is 90803533643. The reversal of 90803533631 is 13633530809.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90803533631 - 2⁶ = 90803533567 is a prime.

It is a super-2 number, since 2×90803533631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90803533651) 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 in 3 ways as a sum of consecutive naturals, for example, 2389566656 + ... + 2389566693.

It is an arithmetic number, because the mean of its divisors is an integer number (23895666750).

Almost surely, 2^90803533631 is an apocalyptic number.

90803533631 is a deficient number, since it is larger than the sum of its proper divisors (4779133369).

90803533631 is a wasteful number, since it uses less digits than its factorization.

90803533631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779133368.

The product of its (nonzero) digits is 174960, while the sum is 41.

The spelling of 90803533631 in words is "ninety billion, eight hundred three million, five hundred thirty-three thousand, six hundred thirty-one".