232243391 has 2 divisors, whose sum is σ = 232243392. Its totient is φ = 232243390.

The previous prime is 232243381. The next prime is 232243421. The reversal of 232243391 is 193342232.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232243391 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232243321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116121695 + 116121696.

It is an arithmetic number, because the mean of its divisors is an integer number (116121696).

Almost surely, 2^232243391 is an apocalyptic number.

232243391 is a deficient number, since it is larger than the sum of its proper divisors (1).

232243391 is an equidigital number, since it uses as much as digits as its factorization.

232243391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 232243391 is about 15239.5338183292. The cubic root of 232243391 is about 614.6781677005.

The spelling of 232243391 in words is "two hundred thirty-two million, two hundred forty-three thousand, three hundred ninety-one".