231100090 has 32 divisors (see below), whose sum is σ = 467462016. Its totient is φ = 81618240.

The previous prime is 231100073. The next prime is 231100099. The reversal of 231100090 is 90001132.

It is not an unprimeable number, because it can be changed into a prime (231100099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35656 + ... + 41635.

It is an arithmetic number, because the mean of its divisors is an integer number (14608188).

Almost surely, 2^231100090 is an apocalyptic number.

231100090 is an abundant number, since it is smaller than the sum of its proper divisors (236361926).

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

231100090 is a wasteful number, since it uses less digits than its factorization.

231100090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77334.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 231100090 is about 15201.9765162297. The cubic root of 231100090 is about 613.6678504291.

The spelling of 231100090 in words is "two hundred thirty-one million, one hundred thousand, ninety".