331132133030981 has 2 divisors, whose sum is σ = 331132133030982. Its totient is φ = 331132133030980.

The previous prime is 331132133030947. The next prime is 331132133031019. The reversal of 331132133030981 is 189030331231133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328938798688900 + 2193334342081 = 18136670^2 + 1480991^2 .

It is a cyclic number.

It is not a de Polignac number, because 331132133030981 - 2⁶ = 331132133030917 is a prime.

It is a super-2 number, since 2×331132133030981² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331132133030921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165566066515490 + 165566066515491.

It is an arithmetic number, because the mean of its divisors is an integer number (165566066515491).

Almost surely, 2^{331132133030981} is an apocalyptic number.

It is an amenable number.

331132133030981 is a deficient number, since it is larger than the sum of its proper divisors (1).

331132133030981 is an equidigital number, since it uses as much as digits as its factorization.

331132133030981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 41.

The spelling of 331132133030981 in words is "three hundred thirty-one trillion, one hundred thirty-two billion, one hundred thirty-three million, thirty thousand, nine hundred eighty-one".