231330132961 has 2 divisors, whose sum is σ = 231330132962. Its totient is φ = 231330132960.

The previous prime is 231330132899. The next prime is 231330132991. The reversal of 231330132961 is 169231033132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171876576400 + 59453556561 = 414580^2 + 243831^2 .

It is a cyclic number.

It is not a de Polignac number, because 231330132961 - 2³¹ = 229182649313 is a prime.

It is not a weakly prime, because it can be changed into another prime (231330132991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115665066480 + 115665066481.

It is an arithmetic number, because the mean of its divisors is an integer number (115665066481).

Almost surely, 2^231330132961 is an apocalyptic number.

It is an amenable number.

231330132961 is a deficient number, since it is larger than the sum of its proper divisors (1).

231330132961 is an equidigital number, since it uses as much as digits as its factorization.

231330132961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 231330132961 in words is "two hundred thirty-one billion, three hundred thirty million, one hundred thirty-two thousand, nine hundred sixty-one".