2131111323 has 16 divisors (see below), whose sum is σ = 3444220800. Its totient is φ = 1291582440.

The previous prime is 2131111321. The next prime is 2131111349. The reversal of 2131111323 is 3231111312.

2131111323 is a `hidden beast` number, since 21 + 311 + 11 + 323 = 666.

It is not a de Polignac number, because 2131111323 - 2¹ = 2131111321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131111296 and 2131111305.

It is not an unprimeable number, because it can be changed into a prime (2131111321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3587433 + ... + 3588026.

It is an arithmetic number, because the mean of its divisors is an integer number (215263800).

Almost surely, 2^2131111323 is an apocalyptic number.

2131111323 is a deficient number, since it is larger than the sum of its proper divisors (1313109477).

2131111323 is a wasteful number, since it uses less digits than its factorization.

2131111323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7175479 (or 7175473 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 2131111323 is about 46163.9613009976. The cubic root of 2131111323 is about 1286.8720810044.

Adding to 2131111323 its reverse (3231111312), we get a palindrome (5362222635).

The spelling of 2131111323 in words is "two billion, one hundred thirty-one million, one hundred eleven thousand, three hundred twenty-three".