2631322643 has 2 divisors, whose sum is σ = 2631322644. Its totient is φ = 2631322642.

The previous prime is 2631322601. The next prime is 2631322649. The reversal of 2631322643 is 3462231362.

2631322643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2631322643 - 2⁶ = 2631322579 is a prime.

It is not a weakly prime, because it can be changed into another prime (2631322649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315661321 + 1315661322.

It is an arithmetic number, because the mean of its divisors is an integer number (1315661322).

Almost surely, 2^2631322643 is an apocalyptic number.

2631322643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631322643 is an equidigital number, since it uses as much as digits as its factorization.

2631322643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

The square root of 2631322643 is about 51296.4193974589. The cubic root of 2631322643 is about 1380.5687362053.

The spelling of 2631322643 in words is "two billion, six hundred thirty-one million, three hundred twenty-two thousand, six hundred forty-three".