2131112999 has 2 divisors, whose sum is σ = 2131113000. Its totient is φ = 2131112998.

The previous prime is 2131112993. The next prime is 2131113059. The reversal of 2131112999 is 9992111312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131112999 - 2⁴ = 2131112983 is a prime.

It is a super-2 number, since 2×2131112999² = 9083285229013548002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131112993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065556499 + 1065556500.

It is an arithmetic number, because the mean of its divisors is an integer number (1065556500).

Almost surely, 2^2131112999 is an apocalyptic number.

2131112999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131112999 is an equidigital number, since it uses as much as digits as its factorization.

2131112999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 38.

The square root of 2131112999 is about 46163.9794536823. The cubic root of 2131112999 is about 1286.8724183553.

The spelling of 2131112999 in words is "two billion, one hundred thirty-one million, one hundred twelve thousand, nine hundred ninety-nine".