230922991 has 8 divisors (see below), whose sum is σ = 252902160. Its totient is φ = 209546112.

The previous prime is 230922971. The next prime is 230922997. The reversal of 230922991 is 199229032.

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

It is a cyclic number.

It is not a de Polignac number, because 230922991 - 2⁵ = 230922959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230922991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230922997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149770 + ... + 151303.

It is an arithmetic number, because the mean of its divisors is an integer number (31612770).

Almost surely, 2^230922991 is an apocalyptic number.

230922991 is a deficient number, since it is larger than the sum of its proper divisors (21979169).

230922991 is a wasteful number, since it uses less digits than its factorization.

230922991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301145.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 230922991 is about 15196.1505322894. The cubic root of 230922991 is about 613.5110529479.

The spelling of 230922991 in words is "two hundred thirty million, nine hundred twenty-two thousand, nine hundred ninety-one".