2124138931 has 4 divisors (see below), whose sum is σ = 2140353864. Its totient is φ = 2107924000.

The previous prime is 2124138911. The next prime is 2124138937. The reversal of 2124138931 is 1398314212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2124138931 - 2¹⁹ = 2123614643 is a prime.

It is a super-2 number, since 2×2124138931² = 9023932396379645522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124138937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8107270 + ... + 8107531.

It is an arithmetic number, because the mean of its divisors is an integer number (535088466).

Almost surely, 2^2124138931 is an apocalyptic number.

2124138931 is a deficient number, since it is larger than the sum of its proper divisors (16214933).

2124138931 is a wasteful number, since it uses less digits than its factorization.

2124138931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16214932.

The product of its digits is 10368, while the sum is 34.

The square root of 2124138931 is about 46088.3817355307. The cubic root of 2124138931 is about 1285.4671208204.

The spelling of 2124138931 in words is "two billion, one hundred twenty-four million, one hundred thirty-eight thousand, nine hundred thirty-one".