2131437 has 16 divisors (see below), whose sum is σ = 3543552. Its totient is φ = 1107120.

The previous prime is 2131429. The next prime is 2131447. The reversal of 2131437 is 7341312.

It is not a de Polignac number, because 2131437 - 2³ = 2131429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131417) 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, 4383 + ... + 4844.

It is an arithmetic number, because the mean of its divisors is an integer number (221472).

2^2131437 is an apocalyptic number.

It is an amenable number.

2131437 is a deficient number, since it is larger than the sum of its proper divisors (1412115).

2131437 is a wasteful number, since it uses less digits than its factorization.

2131437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9248.

The product of its digits is 504, while the sum is 21.

The square root of 2131437 is about 1459.9441770150. The cubic root of 2131437 is about 128.6937631043.

Adding to 2131437 its reverse (7341312), we get a palindrome (9472749).

The spelling of 2131437 in words is "two million, one hundred thirty-one thousand, four hundred thirty-seven".