232740991 has 8 divisors (see below), whose sum is σ = 267477120. Its totient is φ = 198376728.

The previous prime is 232740973. The next prime is 232740997. The reversal of 232740991 is 199047232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232740991 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 232740991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232740997) 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, 91621 + ... + 94126.

It is an arithmetic number, because the mean of its divisors is an integer number (33434640).

Almost surely, 2^232740991 is an apocalyptic number.

232740991 is a deficient number, since it is larger than the sum of its proper divisors (34736129).

232740991 is a wasteful number, since it uses less digits than its factorization.

232740991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185933.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 232740991 is about 15255.8510414857. The cubic root of 232740991 is about 615.1168535531.

The spelling of 232740991 in words is "two hundred thirty-two million, seven hundred forty thousand, nine hundred ninety-one".