2131836 has 48 divisors (see below), whose sum is σ = 5832960. Its totient is φ = 593280.

The previous prime is 2131823. The next prime is 2131837. The reversal of 2131836 is 6381312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131837) 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, 3135 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (121520).

2^2131836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2916480).

2131836 is an abundant number, since it is smaller than the sum of its proper divisors (3701124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131836 is a wasteful number, since it uses less digits than its factorization.

2131836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 672 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 2131836 is about 1460.0808196809. The cubic root of 2131836 is about 128.7017929934.

The spelling of 2131836 in words is "two million, one hundred thirty-one thousand, eight hundred thirty-six".