331561245263 has 2 divisors, whose sum is σ = 331561245264. Its totient is φ = 331561245262.

The previous prime is 331561245259. The next prime is 331561245287. The reversal of 331561245263 is 362542165133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331561245263 - 2² = 331561245259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331561245263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331561245233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165780622631 + 165780622632.

It is an arithmetic number, because the mean of its divisors is an integer number (165780622632).

Almost surely, 2^331561245263 is an apocalyptic number.

331561245263 is a deficient number, since it is larger than the sum of its proper divisors (1).

331561245263 is an equidigital number, since it uses as much as digits as its factorization.

331561245263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 41.

The spelling of 331561245263 in words is "three hundred thirty-one billion, five hundred sixty-one million, two hundred forty-five thousand, two hundred sixty-three".