331616377 has 2 divisors, whose sum is σ = 331616378. Its totient is φ = 331616376.

The previous prime is 331616359. The next prime is 331616401. The reversal of 331616377 is 773616133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216354681 + 115261696 = 14709^2 + 10736^2 .

It is a cyclic number.

It is not a de Polignac number, because 331616377 - 2¹⁹ = 331092089 is a prime.

It is a super-2 number, since 2×331616377² = 219938842989212258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331616317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165808188 + 165808189.

It is an arithmetic number, because the mean of its divisors is an integer number (165808189).

Almost surely, 2^331616377 is an apocalyptic number.

It is an amenable number.

331616377 is a deficient number, since it is larger than the sum of its proper divisors (1).

331616377 is an equidigital number, since it uses as much as digits as its factorization.

331616377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 37.

The square root of 331616377 is about 18210.3370918827. The cubic root of 331616377 is about 692.1687534634.

The spelling of 331616377 in words is "three hundred thirty-one million, six hundred sixteen thousand, three hundred seventy-seven".