31631818452701 has 2 divisors, whose sum is σ = 31631818452702. Its totient is φ = 31631818452700.

The previous prime is 31631818452671. The next prime is 31631818452709. The reversal of 31631818452701 is 10725481813613.

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., 26492370761476 + 5139447691225 = 5147074^2 + 2267035^2 .

It is a cyclic number.

It is not a de Polignac number, because 31631818452701 - 2³⁸ = 31356940545757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31631818452701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31631818452709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15815909226350 + 15815909226351.

It is an arithmetic number, because the mean of its divisors is an integer number (15815909226351).

Almost surely, 2^{31631818452701} is an apocalyptic number.

It is an amenable number.

31631818452701 is a deficient number, since it is larger than the sum of its proper divisors (1).

31631818452701 is an equidigital number, since it uses as much as digits as its factorization.

31631818452701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 31631818452701 in words is "thirty-one trillion, six hundred thirty-one billion, eight hundred eighteen million, four hundred fifty-two thousand, seven hundred one".