331123022232991 has 2 divisors, whose sum is σ = 331123022232992. Its totient is φ = 331123022232990.

The previous prime is 331123022232923. The next prime is 331123022233001. The reversal of 331123022232991 is 199232220321133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331123022232991 - 2²¹ = 331123020135839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331123022232391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165561511116495 + 165561511116496.

It is an arithmetic number, because the mean of its divisors is an integer number (165561511116496).

Almost surely, 2^{331123022232991} is an apocalyptic number.

331123022232991 is a deficient number, since it is larger than the sum of its proper divisors (1).

331123022232991 is an equidigital number, since it uses as much as digits as its factorization.

331123022232991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 331123022232991 in words is "three hundred thirty-one trillion, one hundred twenty-three billion, twenty-two million, two hundred thirty-two thousand, nine hundred ninety-one".