2123023131 has 24 divisors (see below), whose sum is σ = 3111909840. Its totient is φ = 1394568000.

The previous prime is 2123023117. The next prime is 2123023141. The reversal of 2123023131 is 1313203212.

It is not a de Polignac number, because 2123023131 - 2⁹ = 2123022619 is a prime.

It is a super-2 number, since 2×2123023131² = 9014454429522086322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2123023141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186265 + ... + 197333.

It is an arithmetic number, because the mean of its divisors is an integer number (129662910).

Almost surely, 2^2123023131 is an apocalyptic number.

2123023131 is a deficient number, since it is larger than the sum of its proper divisors (988886709).

2123023131 is a wasteful number, since it uses less digits than its factorization.

2123023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11387 (or 11384 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2123023131 is about 46076.2751424201. The cubic root of 2123023131 is about 1285.2419981579.

Adding to 2123023131 its reverse (1313203212), we get a palindrome (3436226343).

The spelling of 2123023131 in words is "two billion, one hundred twenty-three million, twenty-three thousand, one hundred thirty-one".