331320313277 has 2 divisors, whose sum is σ = 331320313278. Its totient is φ = 331320313276.

The previous prime is 331320313267. The next prime is 331320313279. The reversal of 331320313277 is 772313023133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318029451481 + 13290861796 = 563941^2 + 115286^2 .

It is a cyclic number.

It is not a de Polignac number, because 331320313277 - 2⁸ = 331320313021 is a prime.

It is a super-3 number, since 3×331320313277³ (a number of 36 digits) contains 333 as substring.

Together with 331320313279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331320313279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165660156638 + 165660156639.

It is an arithmetic number, because the mean of its divisors is an integer number (165660156639).

Almost surely, 2^331320313277 is an apocalyptic number.

It is an amenable number.

331320313277 is a deficient number, since it is larger than the sum of its proper divisors (1).

331320313277 is an equidigital number, since it uses as much as digits as its factorization.

331320313277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 35.

The spelling of 331320313277 in words is "three hundred thirty-one billion, three hundred twenty million, three hundred thirteen thousand, two hundred seventy-seven".