232581901 has 2 divisors, whose sum is σ = 232581902. Its totient is φ = 232581900.

The previous prime is 232581863. The next prime is 232581917. The reversal of 232581901 is 109185232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122877225 + 109704676 = 11085^2 + 10474^2 .

It is a cyclic number.

It is not a de Polignac number, because 232581901 - 2⁹ = 232581389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232581101) 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, 116290950 + 116290951.

It is an arithmetic number, because the mean of its divisors is an integer number (116290951).

Almost surely, 2^232581901 is an apocalyptic number.

It is an amenable number.

232581901 is a deficient number, since it is larger than the sum of its proper divisors (1).

232581901 is an equidigital number, since it uses as much as digits as its factorization.

232581901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 232581901 is about 15250.6360850949. The cubic root of 232581901 is about 614.9766673237.

The spelling of 232581901 in words is "two hundred thirty-two million, five hundred eighty-one thousand, nine hundred one".