331313377 has 2 divisors, whose sum is σ = 331313378. Its totient is φ = 331313376.

The previous prime is 331313369. The next prime is 331313383. The reversal of 331313377 is 773313133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176783616 + 154529761 = 13296^2 + 12431^2 .

It is a cyclic number.

It is not a de Polignac number, because 331313377 - 2³ = 331313369 is a prime.

It is not a weakly prime, because it can be changed into another prime (331353377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165656688 + 165656689.

It is an arithmetic number, because the mean of its divisors is an integer number (165656689).

Almost surely, 2^331313377 is an apocalyptic number.

It is an amenable number.

331313377 is a deficient number, since it is larger than the sum of its proper divisors (1).

331313377 is an equidigital number, since it uses as much as digits as its factorization.

331313377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11907, while the sum is 31.

The square root of 331313377 is about 18202.0157400218. The cubic root of 331313377 is about 691.9578762212.

The spelling of 331313377 in words is "three hundred thirty-one million, three hundred thirteen thousand, three hundred seventy-seven".