2131431423 has 32 divisors (see below), whose sum is σ = 3286863360. Its totient is φ = 1214223360.

The previous prime is 2131431409. The next prime is 2131431479. The reversal of 2131431423 is 3241341312.

It is a happy number.

It is not a de Polignac number, because 2131431423 - 2⁵ = 2131431391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131431393 and 2131431402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131431823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 540523 + ... + 544451.

It is an arithmetic number, because the mean of its divisors is an integer number (102714480).

Almost surely, 2^2131431423 is an apocalyptic number.

2131431423 is a deficient number, since it is larger than the sum of its proper divisors (1155431937).

2131431423 is a wasteful number, since it uses less digits than its factorization.

2131431423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927.

The product of its digits is 1728, while the sum is 24.

The square root of 2131431423 is about 46167.4281609881. The cubic root of 2131431423 is about 1286.9365085992.

Adding to 2131431423 its reverse (3241341312), we get a palindrome (5372772735).

The spelling of 2131431423 in words is "two billion, one hundred thirty-one million, four hundred thirty-one thousand, four hundred twenty-three".