2162631 has 4 divisors (see below), whose sum is σ = 2883512. Its totient is φ = 1441752.

The previous prime is 2162623. The next prime is 2162639. The reversal of 2162631 is 1362612.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2162623) and next prime (2162639).

It is not a de Polignac number, because 2162631 - 2³ = 2162623 is a prime.

It is a super-2 number, since 2×2162631² = 9353945684322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2162598 and 2162607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162639) 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, 360436 + ... + 360441.

It is an arithmetic number, because the mean of its divisors is an integer number (720878).

2^2162631 is an apocalyptic number.

2162631 is a deficient number, since it is larger than the sum of its proper divisors (720881).

2162631 is an equidigital number, since it uses as much as digits as its factorization.

2162631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720880.

The product of its digits is 432, while the sum is 21.

The square root of 2162631 is about 1470.5886576470. The cubic root of 2162631 is about 129.3185445295.

The spelling of 2162631 in words is "two million, one hundred sixty-two thousand, six hundred thirty-one".