2631122109 has 112 divisors (see below), whose sum is σ = 5179246080. Its totient is φ = 1294354080.

The previous prime is 2631122083. The next prime is 2631122111. The reversal of 2631122109 is 9012211362.

2631122109 is a `hidden beast` number, since 2 + 631 + 1 + 2 + 21 + 0 + 9 = 666.

It is not a de Polignac number, because 2631122109 - 2¹⁵ = 2631089341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631122149) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1065294 + ... + 1067760.

Almost surely, 2^2631122109 is an apocalyptic number.

It is an amenable number.

2631122109 is a deficient number, since it is larger than the sum of its proper divisors (2548123971).

2631122109 is a wasteful number, since it uses less digits than its factorization.

2631122109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522 (or 2507 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 2631122109 is about 51294.4647013691. The cubic root of 2631122109 is about 1380.5336641089.

The spelling of 2631122109 in words is "two billion, six hundred thirty-one million, one hundred twenty-two thousand, one hundred nine".