331400377 has 12 divisors (see below), whose sum is σ = 420553296. Its totient is φ = 258233640.

The previous prime is 331400369. The next prime is 331400393. The reversal of 331400377 is 773004133.

It is not a de Polignac number, because 331400377 - 2³ = 331400369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331400177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306883 + ... + 307960.

It is an arithmetic number, because the mean of its divisors is an integer number (35046108).

Almost surely, 2^331400377 is an apocalyptic number.

It is an amenable number.

331400377 is a deficient number, since it is larger than the sum of its proper divisors (89152919).

331400377 is a wasteful number, since it uses less digits than its factorization.

331400377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614868 (or 614861 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 331400377 is about 18204.4054283572. The cubic root of 331400377 is about 692.0184382860.

The spelling of 331400377 in words is "three hundred thirty-one million, four hundred thousand, three hundred seventy-seven".