2123131430 has 32 divisors (see below), whose sum is σ = 4407670080. Its totient is φ = 721249920.

The previous prime is 2123131393. The next prime is 2123131469. The reversal of 2123131430 is 341313212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131501 + ... + 146760.

It is an arithmetic number, because the mean of its divisors is an integer number (137739690).

Almost surely, 2^2123131430 is an apocalyptic number.

2123131430 is an abundant number, since it is smaller than the sum of its proper divisors (2284538650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123131430 is a wasteful number, since it uses less digits than its factorization.

2123131430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278384.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2123131430 is about 46077.4503417887. The cubic root of 2123131430 is about 1285.2638519089.

Adding to 2123131430 its reverse (341313212), we get a palindrome (2464444642).

The spelling of 2123131430 in words is "two billion, one hundred twenty-three million, one hundred thirty-one thousand, four hundred thirty".