231262961 has 2 divisors, whose sum is σ = 231262962. Its totient is φ = 231262960.

The previous prime is 231262943. The next prime is 231262973. The reversal of 231262961 is 169262132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175297600 + 55965361 = 13240^2 + 7481^2 .

It is a cyclic number.

It is not a de Polignac number, because 231262961 - 2⁶ = 231262897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (231262931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115631480 + 115631481.

It is an arithmetic number, because the mean of its divisors is an integer number (115631481).

Almost surely, 2^231262961 is an apocalyptic number.

It is an amenable number.

231262961 is a deficient number, since it is larger than the sum of its proper divisors (1).

231262961 is an equidigital number, since it uses as much as digits as its factorization.

231262961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 231262961 is about 15207.3324748294. The cubic root of 231262961 is about 613.8119802238.

The spelling of 231262961 in words is "two hundred thirty-one million, two hundred sixty-two thousand, nine hundred sixty-one".