2631321266 has 24 divisors (see below), whose sum is σ = 4605925356. Its totient is φ = 1124138400.

The previous prime is 2631321221. The next prime is 2631321271. The reversal of 2631321266 is 6621231362.

It can be written as a sum of positive squares in 2 ways, for example, as 2197640641 + 433680625 = 46879^2 + 20825^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11285 + ... + 73416.

Almost surely, 2^2631321266 is an apocalyptic number.

2631321266 is a deficient number, since it is larger than the sum of its proper divisors (1974604090).

2631321266 is a wasteful number, since it uses less digits than its factorization.

2631321266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85034 (or 85027 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 2631321266 is about 51296.4059754677. The cubic root of 2631321266 is about 1380.5684953830.

The spelling of 2631321266 in words is "two billion, six hundred thirty-one million, three hundred twenty-one thousand, two hundred sixty-six".