90213231138 has 8 divisors (see below), whose sum is σ = 180426462288. Its totient is φ = 30071077044.

The previous prime is 90213231137. The next prime is 90213231217. The reversal of 90213231138 is 83113231209.

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

90213231138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 90213231099 and 90213231108.

It is not an unprimeable number, because it can be changed into a prime (90213231133) 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 3 ways as a sum of consecutive naturals, for example, 7517769256 + ... + 7517769267.

It is an arithmetic number, because the mean of its divisors is an integer number (22553307786).

Almost surely, 2^90213231138 is an apocalyptic number.

90213231138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90213231138 is a wasteful number, since it uses less digits than its factorization.

90213231138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15035538528.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 90213231138 in words is "ninety billion, two hundred thirteen million, two hundred thirty-one thousand, one hundred thirty-eight".