3130391 has 12 divisors (see below), whose sum is σ = 3530352. Its totient is φ = 2772000.

The previous prime is 3130373. The next prime is 3130399. The reversal of 3130391 is 1930313.

It is not a de Polignac number, because 3130391 - 2⁶ = 3130327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4646 + ... + 5276.

It is an arithmetic number, because the mean of its divisors is an integer number (294196).

Almost surely, 2^3130391 is an apocalyptic number.

3130391 is a deficient number, since it is larger than the sum of its proper divisors (399961).

3130391 is a wasteful number, since it uses less digits than its factorization.

3130391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 20.

The square root of 3130391 is about 1769.2911009780. The cubic root of 3130391 is about 146.2849099705.

It can be divided in two parts, 3130 and 391, that multiplied together give a triangular number (1223830 = T₁₅₆₄).

The spelling of 3130391 in words is "three million, one hundred thirty thousand, three hundred ninety-one".