3130631 has 4 divisors (see below), whose sum is σ = 3577872. Its totient is φ = 2683392.

The previous prime is 3130627. The next prime is 3130663. The reversal of 3130631 is 1360313.

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 3130631 - 2² = 3130627 is a prime.

It is a super-2 number, since 2×3130631² = 19601700916322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130031) 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, 223610 + ... + 223623.

It is an arithmetic number, because the mean of its divisors is an integer number (894468).

Almost surely, 2^3130631 is an apocalyptic number.

3130631 is a deficient number, since it is larger than the sum of its proper divisors (447241).

3130631 is an equidigital number, since it uses as much as digits as its factorization.

3130631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447240.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 3130631 is about 1769.3589234522. The cubic root of 3130631 is about 146.2886483194.

Adding to 3130631 its reverse (1360313), we get a palindrome (4490944).

The spelling of 3130631 in words is "three million, one hundred thirty thousand, six hundred thirty-one".