2123134430 has 16 divisors (see below), whose sum is σ = 3822172704. Its totient is φ = 849135840.

The previous prime is 2123134397. The next prime is 2123134441. The reversal of 2123134430 is 344313212.

It is a junction number, because it is equal to n+sod(n) for n = 2123134396 and 2123134405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116540 + ... + 133520.

It is an arithmetic number, because the mean of its divisors is an integer number (238885794).

Almost surely, 2^2123134430 is an apocalyptic number.

2123134430 is a deficient number, since it is larger than the sum of its proper divisors (1699038274).

2123134430 is a wasteful number, since it uses less digits than its factorization.

2123134430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29491.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2123134430 is about 46077.4828956617. The cubic root of 2123134430 is about 1285.2644572710.

Adding to 2123134430 its reverse (344313212), we get a palindrome (2467447642).

The spelling of 2123134430 in words is "two billion, one hundred twenty-three million, one hundred thirty-four thousand, four hundred thirty".