2631109 has 4 divisors (see below), whose sum is σ = 2833516. Its totient is φ = 2428704.

The previous prime is 2631103. The next prime is 2631133. The reversal of 2631109 is 9011362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9011362 = 2 ⋅4505681.

It can be written as a sum of positive squares in 2 ways, for example, as 372100 + 2259009 = 610^2 + 1503^2 .

It is a cyclic number.

It is not a de Polignac number, because 2631109 - 2⁵ = 2631077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2631109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631103) 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, 101184 + ... + 101209.

It is an arithmetic number, because the mean of its divisors is an integer number (708379).

2^2631109 is an apocalyptic number.

It is an amenable number.

2631109 is a deficient number, since it is larger than the sum of its proper divisors (202407).

2631109 is a wasteful number, since it uses less digits than its factorization.

2631109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202406.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2631109 is about 1622.0693573334. The cubic root of 2631109 is about 138.0531371368.

The spelling of 2631109 in words is "two million, six hundred thirty-one thousand, one hundred nine".