2131830 has 24 divisors (see below), whose sum is σ = 5542992. Its totient is φ = 568464.

The previous prime is 2131823. The next prime is 2131837. The reversal of 2131830 is 381312.

It is an interprime number because it is at equal distance from previous prime (2131823) and next prime (2131837).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 11754 + ... + 11933.

It is an arithmetic number, because the mean of its divisors is an integer number (230958).

2^2131830 is an apocalyptic number.

2131830 is an abundant number, since it is smaller than the sum of its proper divisors (3411162).

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

2131830 is a wasteful number, since it uses less digits than its factorization.

2131830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23700 (or 23697 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2131830 is about 1460.0787649987. The cubic root of 2131830 is about 128.7016722506.

The spelling of 2131830 in words is "two million, one hundred thirty-one thousand, eight hundred thirty".