232172861 has 2 divisors, whose sum is σ = 232172862. Its totient is φ = 232172860.

The previous prime is 232172819. The next prime is 232172881. The reversal of 232172861 is 168271232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231952900 + 219961 = 15230^2 + 469^2 .

It is a cyclic number.

It is not a de Polignac number, because 232172861 - 2⁶ = 232172797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232172881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116086430 + 116086431.

It is an arithmetic number, because the mean of its divisors is an integer number (116086431).

Almost surely, 2^232172861 is an apocalyptic number.

It is an amenable number.

232172861 is a deficient number, since it is larger than the sum of its proper divisors (1).

232172861 is an equidigital number, since it uses as much as digits as its factorization.

232172861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 232172861 is about 15237.2195954511. The cubic root of 232172861 is about 614.6159375255.

The spelling of 232172861 in words is "two hundred thirty-two million, one hundred seventy-two thousand, eight hundred sixty-one".