90123123231312 has 40 divisors (see below), whose sum is σ = 240846277604640. Its totient is φ = 29005143108480.

The previous prime is 90123123231263. The next prime is 90123123231331. The reversal of 90123123231312 is 21313232132109.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32371810114 + ... + 32371812897.

It is an arithmetic number, because the mean of its divisors is an integer number (6021156940116).

Almost surely, 2^{90123123231312} is an apocalyptic number.

It is an amenable number.

90123123231312 is an abundant number, since it is smaller than the sum of its proper divisors (150723154373328).

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

90123123231312 is a wasteful number, since it uses less digits than its factorization.

90123123231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64743623051 (or 64743623045 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 90123123231312 in words is "ninety trillion, one hundred twenty-three billion, one hundred twenty-three million, two hundred thirty-one thousand, three hundred twelve".