2312131123 has 4 divisors (see below), whose sum is σ = 2322499648. Its totient is φ = 2301762600.

The previous prime is 2312131103. The next prime is 2312131141. The reversal of 2312131123 is 3211312132.

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 2312131123 - 2¹³ = 2312122931 is a prime.

It is a super-2 number, since 2×2312131123² = 10691900659890482258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2312131123.

It is not an unprimeable number, because it can be changed into a prime (2312131103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5183928 + ... + 5184373.

It is an arithmetic number, because the mean of its divisors is an integer number (580624912).

Almost surely, 2^2312131123 is an apocalyptic number.

2312131123 is a deficient number, since it is larger than the sum of its proper divisors (10368525).

2312131123 is a wasteful number, since it uses less digits than its factorization.

2312131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10368524.

The product of its digits is 216, while the sum is 19.

The square root of 2312131123 is about 48084.6246008014. The cubic root of 2312131123 is about 1322.3228008625.

Adding to 2312131123 its reverse (3211312132), we get a palindrome (5523443255).

The spelling of 2312131123 in words is "two billion, three hundred twelve million, one hundred thirty-one thousand, one hundred twenty-three".