2131392 has 56 divisors (see below), whose sum is σ = 5980176. Its totient is φ = 667648.

The previous prime is 2131373. The next prime is 2131399. The reversal of 2131392 is 2931312.

It is a happy number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2938 + ... + 3590.

2^2131392 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 2131392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2990088).

2131392 is an abundant number, since it is smaller than the sum of its proper divisors (3848784).

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

2131392 is a wasteful number, since it uses less digits than its factorization.

2131392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 675 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

The square root of 2131392 is about 1459.9287653855. The cubic root of 2131392 is about 128.6928574149.

It can be divided in two parts, 21 and 31392, that added together give a palindrome (31413).

The spelling of 2131392 in words is "two million, one hundred thirty-one thousand, three hundred ninety-two".