232231997 has 2 divisors, whose sum is σ = 232231998. Its totient is φ = 232231996.

The previous prime is 232231991. The next prime is 232232009. The reversal of 232231997 is 799132232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231374521 + 857476 = 15211^2 + 926^2 .

It is a cyclic number.

It is not a de Polignac number, because 232231997 - 2⁶ = 232231933 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 232231997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232231991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116115998 + 116115999.

It is an arithmetic number, because the mean of its divisors is an integer number (116115999).

Almost surely, 2^232231997 is an apocalyptic number.

It is an amenable number.

232231997 is a deficient number, since it is larger than the sum of its proper divisors (1).

232231997 is an equidigital number, since it uses as much as digits as its factorization.

232231997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 232231997 is about 15239.1599834112. The cubic root of 232231997 is about 614.6681153763.

The spelling of 232231997 in words is "two hundred thirty-two million, two hundred thirty-one thousand, nine hundred ninety-seven".