3130639 has 4 divisors (see below), whose sum is σ = 3151800. Its totient is φ = 3109480.

The previous prime is 3130627. The next prime is 3130663. The reversal of 3130639 is 9360313.

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

It is a cyclic number.

It is not a de Polignac number, because 3130639 - 2¹³ = 3122447 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 (3130619) 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 3 ways as a sum of consecutive naturals, for example, 10357 + ... + 10654.

It is an arithmetic number, because the mean of its divisors is an integer number (787950).

Almost surely, 2^3130639 is an apocalyptic number.

3130639 is a deficient number, since it is larger than the sum of its proper divisors (21161).

3130639 is a wasteful number, since it uses less digits than its factorization.

3130639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21160.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 3130639 is about 1769.3611841566. The cubic root of 3130639 is about 146.2887729278.

The spelling of 3130639 in words is "three million, one hundred thirty thousand, six hundred thirty-nine".