90312320032 has 48 divisors (see below), whose sum is σ = 194590154304. Its totient is φ = 40919008000.

The previous prime is 90312319949. The next prime is 90312320039. The reversal of 90312320032 is 23002321309.

It is a junction number, because it is equal to n+sod(n) for n = 90312319979 and 90312320006.

It is not an unprimeable number, because it can be changed into a prime (90312320039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303019 + ... + 521962.

It is an arithmetic number, because the mean of its divisors is an integer number (4053961548).

Almost surely, 2^90312320032 is an apocalyptic number.

It is an amenable number.

90312320032 is an abundant number, since it is smaller than the sum of its proper divisors (104277834272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90312320032 is a wasteful number, since it uses less digits than its factorization.

90312320032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825313 (or 825305 counting only the distinct ones).

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

The spelling of 90312320032 in words is "ninety billion, three hundred twelve million, three hundred twenty thousand, thirty-two".