2311217639 has 2 divisors, whose sum is σ = 2311217640. Its totient is φ = 2311217638.

The previous prime is 2311217599. The next prime is 2311217663. The reversal of 2311217639 is 9367121132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2311217639 - 2⁸ = 2311217383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2311217599 and 2311217608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311817639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155608819 + 1155608820.

It is an arithmetic number, because the mean of its divisors is an integer number (1155608820).

Almost surely, 2^2311217639 is an apocalyptic number.

2311217639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311217639 is an equidigital number, since it uses as much as digits as its factorization.

2311217639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 2311217639 is about 48075.1249504356. The cubic root of 2311217639 is about 1322.1486354470.

The spelling of 2311217639 in words is "two billion, three hundred eleven million, two hundred seventeen thousand, six hundred thirty-nine".