232131191 has 2 divisors, whose sum is σ = 232131192. Its totient is φ = 232131190.

The previous prime is 232131187. The next prime is 232131197. The reversal of 232131191 is 191131232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 232131191 - 2² = 232131187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232131197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116065595 + 116065596.

It is an arithmetic number, because the mean of its divisors is an integer number (116065596).

Almost surely, 2^232131191 is an apocalyptic number.

232131191 is a deficient number, since it is larger than the sum of its proper divisors (1).

232131191 is an equidigital number, since it uses as much as digits as its factorization.

232131191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 23.

The square root of 232131191 is about 15235.8521586421. The cubic root of 232131191 is about 614.5791652425.

The spelling of 232131191 in words is "two hundred thirty-two million, one hundred thirty-one thousand, one hundred ninety-one".