2631115205 has 4 divisors (see below), whose sum is σ = 3157338252. Its totient is φ = 2104892160.

The previous prime is 2631115187. The next prime is 2631115213. The reversal of 2631115205 is 5025111362.

2631115205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 468679201 + 2162436004 = 21649^2 + 46502^2 .

It is not a de Polignac number, because 2631115205 - 2²⁴ = 2614337989 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 263111516 + ... + 263111525.

It is an arithmetic number, because the mean of its divisors is an integer number (789334563).

Almost surely, 2^2631115205 is an apocalyptic number.

It is an amenable number.

2631115205 is a deficient number, since it is larger than the sum of its proper divisors (526223047).

2631115205 is an equidigital number, since it uses as much as digits as its factorization.

2631115205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526223046.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2631115205 is about 51294.3974036151. The cubic root of 2631115205 is about 1380.5324566123.

Adding to 2631115205 its reverse (5025111362), we get a palindrome (7656226567).

The spelling of 2631115205 in words is "two billion, six hundred thirty-one million, one hundred fifteen thousand, two hundred five".