2123131424 has 12 divisors (see below), whose sum is σ = 4179915054. Its totient is φ = 1061565696.

The previous prime is 2123131393. The next prime is 2123131469. The reversal of 2123131424 is 4241313212.

It can be written as a sum of positive squares in only one way, i.e., 2121523600 + 1607824 = 46060^2 + 1268^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2123131424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33173897 + ... + 33173960.

Almost surely, 2^2123131424 is an apocalyptic number.

It is an amenable number.

2123131424 is a deficient number, since it is larger than the sum of its proper divisors (2056783630).

2123131424 is an equidigital number, since it uses as much as digits as its factorization.

2123131424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66347867 (or 66347859 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 2123131424 is about 46077.4502766809. The cubic root of 2123131424 is about 1285.2638506982.

Adding to 2123131424 its reverse (4241313212), we get a palindrome (6364444636).

The spelling of 2123131424 in words is "two billion, one hundred twenty-three million, one hundred thirty-one thousand, four hundred twenty-four".