331131266797 has 2 divisors, whose sum is σ = 331131266798. Its totient is φ = 331131266796.

The previous prime is 331131266729. The next prime is 331131266833. The reversal of 331131266797 is 797662131133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321609215236 + 9522051561 = 567106^2 + 97581^2 .

It is a cyclic number.

It is not a de Polignac number, because 331131266797 - 2³⁵ = 296771528429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331131266797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331131266717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165565633398 + 165565633399.

It is an arithmetic number, because the mean of its divisors is an integer number (165565633399).

Almost surely, 2^331131266797 is an apocalyptic number.

It is an amenable number.

331131266797 is a deficient number, since it is larger than the sum of its proper divisors (1).

331131266797 is an equidigital number, since it uses as much as digits as its factorization.

331131266797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 49.

The spelling of 331131266797 in words is "three hundred thirty-one billion, one hundred thirty-one million, two hundred sixty-six thousand, seven hundred ninety-seven".