2123214131 has 4 divisors (see below), whose sum is σ = 2132326872. Its totient is φ = 2114101392.

The previous prime is 2123214113. The next prime is 2123214169. The reversal of 2123214131 is 1314123212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123214131 is a prime.

It is a super-2 number, since 2×2123214131² = 9016076492156170322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123414131) 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, 4556021 + ... + 4556486.

It is an arithmetic number, because the mean of its divisors is an integer number (533081718).

Almost surely, 2^2123214131 is an apocalyptic number.

2123214131 is a deficient number, since it is larger than the sum of its proper divisors (9112741).

2123214131 is an equidigital number, since it uses as much as digits as its factorization.

2123214131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9112740.

The product of its digits is 288, while the sum is 20.

The square root of 2123214131 is about 46078.3477459859. The cubic root of 2123214131 is about 1285.2805397164.

Adding to 2123214131 its reverse (1314123212), we get a palindrome (3437337343).

The spelling of 2123214131 in words is "two billion, one hundred twenty-three million, two hundred fourteen thousand, one hundred thirty-one".