2631155205 has 24 divisors (see below), whose sum is σ = 4897171872. Its totient is φ = 1202813472.

The previous prime is 2631155183. The next prime is 2631155227. The reversal of 2631155205 is 5025511362.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2631155183) and next prime (2631155227).

It is not a de Polignac number, because 2631155205 - 2⁷ = 2631155077 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1789167 + ... + 1790636.

It is an arithmetic number, because the mean of its divisors is an integer number (204048828).

Almost surely, 2^2631155205 is an apocalyptic number.

It is an amenable number.

2631155205 is a deficient number, since it is larger than the sum of its proper divisors (2266016667).

2631155205 is a wasteful number, since it uses less digits than its factorization.

2631155205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579825 (or 3579818 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 2631155205 is about 51294.7873082636. The cubic root of 2631155205 is about 1380.5394525075.

Adding to 2631155205 its reverse (5025511362), we get a palindrome (7656666567).

The spelling of 2631155205 in words is "two billion, six hundred thirty-one million, one hundred fifty-five thousand, two hundred five".