90312131402 has 8 divisors (see below), whose sum is σ = 136279384416. Its totient is φ = 44885669932.

The previous prime is 90312131401. The next prime is 90312131431. The reversal of 90312131402 is 20413121309.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×90312131402³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (90312131401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135197468 + ... + 135198135.

It is an arithmetic number, because the mean of its divisors is an integer number (17034923052).

Almost surely, 2^90312131402 is an apocalyptic number.

90312131402 is a deficient number, since it is larger than the sum of its proper divisors (45967253014).

90312131402 is a wasteful number, since it uses less digits than its factorization.

90312131402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270395772.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 90312131402 in words is "ninety billion, three hundred twelve million, one hundred thirty-one thousand, four hundred two".