2126631 has 16 divisors (see below), whose sum is σ = 3153920. Its totient is φ = 1265760.

The previous prime is 2126627. The next prime is 2126633. The reversal of 2126631 is 1366212.

It is a happy number.

It is not a de Polignac number, because 2126631 - 2² = 2126627 is a prime.

It is a super-2 number, since 2×2126631² = 9045118820322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2126598 and 2126607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126633) 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, 330 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (197120).

2^2126631 is an apocalyptic number.

2126631 is a deficient number, since it is larger than the sum of its proper divisors (1027289).

2126631 is a wasteful number, since it uses less digits than its factorization.

2126631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

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

The square root of 2126631 is about 1458.2972947928. The cubic root of 2126631 is about 128.5969633587.

The spelling of 2126631 in words is "two million, one hundred twenty-six thousand, six hundred thirty-one".