2131133423 has 4 divisors (see below), whose sum is σ = 2243298360. Its totient is φ = 2018968488.

The previous prime is 2131133419. The next prime is 2131133443. The reversal of 2131133423 is 3243311312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131133423 - 2² = 2131133419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131133443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56082440 + ... + 56082477.

It is an arithmetic number, because the mean of its divisors is an integer number (560824590).

Almost surely, 2^2131133423 is an apocalyptic number.

2131133423 is a deficient number, since it is larger than the sum of its proper divisors (112164937).

2131133423 is a wasteful number, since it uses less digits than its factorization.

2131133423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112164936.

The product of its digits is 1296, while the sum is 23.

The square root of 2131133423 is about 46164.2006645842. The cubic root of 2131133423 is about 1286.8765293524.

Adding to 2131133423 its reverse (3243311312), we get a palindrome (5374444735).

The spelling of 2131133423 in words is "two billion, one hundred thirty-one million, one hundred thirty-three thousand, four hundred twenty-three".