2123140431 has 32 divisors (see below), whose sum is σ = 3029944320. Its totient is φ = 1319472000.

The previous prime is 2123140423. The next prime is 2123140451. The reversal of 2123140431 is 1340413212.

It is not a de Polignac number, because 2123140431 - 2³ = 2123140423 is a prime.

It is a super-2 number, since 2×2123140431² = 9015450579493731522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2123140398 and 2123140407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123140451) 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, 1890036 + ... + 1891158.

It is an arithmetic number, because the mean of its divisors is an integer number (94685760).

Almost surely, 2^2123140431 is an apocalyptic number.

2123140431 is a deficient number, since it is larger than the sum of its proper divisors (906803889).

2123140431 is a wasteful number, since it uses less digits than its factorization.

2123140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2123140431 is about 46077.5480141902. The cubic root of 2123140431 is about 1285.2656681952.

Adding to 2123140431 its reverse (1340413212), we get a palindrome (3463553643).

The spelling of 2123140431 in words is "two billion, one hundred twenty-three million, one hundred forty thousand, four hundred thirty-one".