3131379 has 20 divisors (see below), whose sum is σ = 4755784. Its totient is φ = 2052864.

The previous prime is 3131377. The next prime is 3131419. The reversal of 3131379 is 9731313.

It is not a de Polignac number, because 3131379 - 2¹ = 3131377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131377) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5139 + ... + 5715.

Almost surely, 2^3131379 is an apocalyptic number.

3131379 is a deficient number, since it is larger than the sum of its proper divisors (1624405).

3131379 is an equidigital number, since it uses as much as digits as its factorization.

3131379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 647 counting only the distinct ones).

The product of its digits is 1701, while the sum is 27.

The square root of 3131379 is about 1769.5702868211. The cubic root of 3131379 is about 146.3002982813.

The spelling of 3131379 in words is "three million, one hundred thirty-one thousand, three hundred seventy-nine".