31304379 has 4 divisors (see below), whose sum is σ = 41739176. Its totient is φ = 20869584.

The previous prime is 31304347. The next prime is 31304401. The reversal of 31304379 is 97340313.

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

It is not a de Polignac number, because 31304379 - 2⁵ = 31304347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31304309) 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 in 3 ways as a sum of consecutive naturals, for example, 5217394 + ... + 5217399.

It is an arithmetic number, because the mean of its divisors is an integer number (10434794).

Almost surely, 2^31304379 is an apocalyptic number.

31304379 is a deficient number, since it is larger than the sum of its proper divisors (10434797).

31304379 is a wasteful number, since it uses less digits than its factorization.

31304379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10434796.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 31304379 is about 5595.0316352993. The cubic root of 31304379 is about 315.1628585925.

The spelling of 31304379 in words is "thirty-one million, three hundred four thousand, three hundred seventy-nine".