3157631 has 8 divisors (see below), whose sum is σ = 3382560. Its totient is φ = 2937088.

The previous prime is 3157613. The next prime is 3157639. The reversal of 3157631 is 1367513.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3157631 - 2¹⁴ = 3141247 is a prime.

It is a super-2 number, since 2×3157631² = 19941267064322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3157631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157639) 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 7 ways as a sum of consecutive naturals, for example, 470 + ... + 2556.

It is an arithmetic number, because the mean of its divisors is an integer number (422820).

Almost surely, 2^3157631 is an apocalyptic number.

3157631 is a deficient number, since it is larger than the sum of its proper divisors (224929).

3157631 is a wasteful number, since it uses less digits than its factorization.

3157631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193.

The product of its digits is 1890, while the sum is 26.

The square root of 3157631 is about 1776.9724252222. The cubic root of 3157631 is about 146.7079985670.

The spelling of 3157631 in words is "three million, one hundred fifty-seven thousand, six hundred thirty-one".