230131091 has 4 divisors (see below), whose sum is σ = 243668232. Its totient is φ = 216593952.

The previous prime is 230131087. The next prime is 230131117. The reversal of 230131091 is 190131032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230131091 - 2² = 230131087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230131081) 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, 6768545 + ... + 6768578.

It is an arithmetic number, because the mean of its divisors is an integer number (60917058).

Almost surely, 2^230131091 is an apocalyptic number.

230131091 is a deficient number, since it is larger than the sum of its proper divisors (13537141).

230131091 is a wasteful number, since it uses less digits than its factorization.

230131091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13537140.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 230131091 is about 15170.0722147259. The cubic root of 230131091 is about 612.8089490109.

The spelling of 230131091 in words is "two hundred thirty million, one hundred thirty-one thousand, ninety-one".