3131278800973 has 2 divisors, whose sum is σ = 3131278800974. Its totient is φ = 3131278800972.

The previous prime is 3131278800953. The next prime is 3131278800977. The reversal of 3131278800973 is 3790088721313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3053815665289 + 77463135684 = 1747517^2 + 278322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131278800973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3131278800973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131278800977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565639400486 + 1565639400487.

It is an arithmetic number, because the mean of its divisors is an integer number (1565639400487).

Almost surely, 2^{3131278800973} is an apocalyptic number.

It is an amenable number.

3131278800973 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131278800973 is an equidigital number, since it uses as much as digits as its factorization.

3131278800973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 3131278800973 in words is "three trillion, one hundred thirty-one billion, two hundred seventy-eight million, eight hundred thousand, nine hundred seventy-three".