4031311402981 has 2 divisors, whose sum is σ = 4031311402982. Its totient is φ = 4031311402980.

The previous prime is 4031311402961. The next prime is 4031311402997. The reversal of 4031311402981 is 1892041131304.

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., 3575370448225 + 455940954756 = 1890865^2 + 675234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4031311402981 is a prime.

It is a super-2 number, since 2×4031311402981² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4031311402981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4031311402901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015655701490 + 2015655701491.

It is an arithmetic number, because the mean of its divisors is an integer number (2015655701491).

Almost surely, 2^{4031311402981} is an apocalyptic number.

It is an amenable number.

4031311402981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4031311402981 is an equidigital number, since it uses as much as digits as its factorization.

4031311402981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 4031311402981 in words is "four trillion, thirty-one billion, three hundred eleven million, four hundred two thousand, nine hundred eighty-one".