2112645631 has 2 divisors, whose sum is σ = 2112645632. Its totient is φ = 2112645630.

The previous prime is 2112645617. The next prime is 2112645653. The reversal of 2112645631 is 1365462112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112645631 - 2⁷ = 2112645503 is a prime.

It is a super-2 number, since 2×2112645631² = 8926543124366776322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112645593 and 2112645602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112640631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056322815 + 1056322816.

It is an arithmetic number, because the mean of its divisors is an integer number (1056322816).

Almost surely, 2^2112645631 is an apocalyptic number.

2112645631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112645631 is an equidigital number, since it uses as much as digits as its factorization.

2112645631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 2112645631 is about 45963.5250062482. The cubic root of 2112645631 is about 1283.1444562794.

The spelling of 2112645631 in words is "two billion, one hundred twelve million, six hundred forty-five thousand, six hundred thirty-one".