2131393 has 4 divisors (see below), whose sum is σ = 2325168. Its totient is φ = 1937620.

The previous prime is 2131373. The next prime is 2131399. The reversal of 2131393 is 3931312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2131393 - 2⁵ = 2131361 is a prime.

It is a super-2 number, since 2×2131393² = 9085672240898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96871 + ... + 96892.

It is an arithmetic number, because the mean of its divisors is an integer number (581292).

2^2131393 is an apocalyptic number.

It is an amenable number.

2131393 is a deficient number, since it is larger than the sum of its proper divisors (193775).

2131393 is a wasteful number, since it uses less digits than its factorization.

2131393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193774.

The product of its digits is 486, while the sum is 22.

The square root of 2131393 is about 1459.9291078679. The cubic root of 2131393 is about 128.6928775415.

The spelling of 2131393 in words is "two million, one hundred thirty-one thousand, three hundred ninety-three".