2131443 has 12 divisors (see below), whose sum is σ = 3260088. Its totient is φ = 1337280.

The previous prime is 2131429. The next prime is 2131447. The reversal of 2131443 is 3441312.

It is not a de Polignac number, because 2131443 - 2⁴ = 2131427 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2131447) 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, 6813 + ... + 7118.

It is an arithmetic number, because the mean of its divisors is an integer number (271674).

2^2131443 is an apocalyptic number.

2131443 is a deficient number, since it is larger than the sum of its proper divisors (1128645).

2131443 is a wasteful number, since it uses less digits than its factorization.

2131443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13954 (or 13951 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 2131443 is about 1459.9462318866. The cubic root of 2131443 is about 128.6938838620.

Adding to 2131443 its reverse (3441312), we get a palindrome (5572755).

The spelling of 2131443 in words is "two million, one hundred thirty-one thousand, four hundred forty-three".