2112312997 has 4 divisors (see below), whose sum is σ = 2123035596. Its totient is φ = 2101590400.

The previous prime is 2112312947. The next prime is 2112313003. The reversal of 2112312997 is 7992132112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 965407041 + 1146905956 = 31071^2 + 33866^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112312997 - 2¹⁵ = 2112280229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112312947) 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, 5361004 + ... + 5361397.

It is an arithmetic number, because the mean of its divisors is an integer number (530758899).

Almost surely, 2^2112312997 is an apocalyptic number.

It is an amenable number.

2112312997 is a deficient number, since it is larger than the sum of its proper divisors (10722599).

2112312997 is a wasteful number, since it uses less digits than its factorization.

2112312997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10722598.

The product of its digits is 13608, while the sum is 37.

The square root of 2112312997 is about 45959.9064076506. The cubic root of 2112312997 is about 1283.0771094625.

The spelling of 2112312997 in words is "two billion, one hundred twelve million, three hundred twelve thousand, nine hundred ninety-seven".