331320379 has 4 divisors (see below), whose sum is σ = 356806576. Its totient is φ = 305834184.

The previous prime is 331320349. The next prime is 331320403. The reversal of 331320379 is 973023133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331320379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331320379.

It is not an unprimeable number, because it can be changed into a prime (331320329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12743079 + ... + 12743104.

It is an arithmetic number, because the mean of its divisors is an integer number (89201644).

Almost surely, 2^331320379 is an apocalyptic number.

331320379 is a deficient number, since it is larger than the sum of its proper divisors (25486197).

331320379 is a wasteful number, since it uses less digits than its factorization.

331320379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25486196.

The product of its (nonzero) digits is 10206, while the sum is 31.

The square root of 331320379 is about 18202.2080803401. The cubic root of 331320379 is about 691.9627508155.

The spelling of 331320379 in words is "three hundred thirty-one million, three hundred twenty thousand, three hundred seventy-nine".