331320313279 has 2 divisors, whose sum is σ = 331320313280. Its totient is φ = 331320313278.

The previous prime is 331320313277. The next prime is 331320313327. The reversal of 331320313279 is 972313023133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331320313279 - 2¹ = 331320313277 is a prime.

It is a super-3 number, since 3×331320313279³ (a number of 36 digits) contains 333 as substring.

Together with 331320313277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331320313277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165660156639 + 165660156640.

It is an arithmetic number, because the mean of its divisors is an integer number (165660156640).

Almost surely, 2^331320313279 is an apocalyptic number.

331320313279 is a deficient number, since it is larger than the sum of its proper divisors (1).

331320313279 is an equidigital number, since it uses as much as digits as its factorization.

331320313279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 37.

The spelling of 331320313279 in words is "three hundred thirty-one billion, three hundred twenty million, three hundred thirteen thousand, two hundred seventy-nine".