3161631 has 16 divisors (see below), whose sum is σ = 4636800. Its totient is φ = 1900320.

The previous prime is 3161629. The next prime is 3161647. The reversal of 3161631 is 1361613.

It is not a de Polignac number, because 3161631 - 2¹ = 3161629 is a prime.

It is a super-2 number, since 2×3161631² = 19991821160322, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 3161598 and 3161607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4596 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (289800).

Almost surely, 2^3161631 is an apocalyptic number.

3161631 is a deficient number, since it is larger than the sum of its proper divisors (1475169).

3161631 is a wasteful number, since it uses less digits than its factorization.

3161631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its digits is 324, while the sum is 21.

The square root of 3161631 is about 1778.0975788747. The cubic root of 3161631 is about 146.7699209781.

The spelling of 3161631 in words is "three million, one hundred sixty-one thousand, six hundred thirty-one".