232858991 has 2 divisors, whose sum is σ = 232858992. Its totient is φ = 232858990.

The previous prime is 232858981. The next prime is 232858993. The reversal of 232858991 is 199858232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 232858991 - 2²⁶ = 165750127 is a prime.

Together with 232858993, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 232858991 parts by 21580 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232858993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116429495 + 116429496.

It is an arithmetic number, because the mean of its divisors is an integer number (116429496).

Almost surely, 2^232858991 is an apocalyptic number.

232858991 is a deficient number, since it is larger than the sum of its proper divisors (1).

232858991 is an equidigital number, since it uses as much as digits as its factorization.

232858991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The square root of 232858991 is about 15259.7179200665. The cubic root of 232858991 is about 615.2207910176.

The spelling of 232858991 in words is "two hundred thirty-two million, eight hundred fifty-eight thousand, nine hundred ninety-one".