2311556641 has 2 divisors, whose sum is σ = 2311556642. Its totient is φ = 2311556640.

The previous prime is 2311556609. The next prime is 2311556651. The reversal of 2311556641 is 1466551132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1239321616 + 1072235025 = 35204^2 + 32745^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311556641 - 2⁵ = 2311556609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2311556597 and 2311556606.

It is not a weakly prime, because it can be changed into another prime (2311556651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155778320 + 1155778321.

It is an arithmetic number, because the mean of its divisors is an integer number (1155778321).

Almost surely, 2^2311556641 is an apocalyptic number.

It is an amenable number.

2311556641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311556641 is an equidigital number, since it uses as much as digits as its factorization.

2311556641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The square root of 2311556641 is about 48078.6505738254. The cubic root of 2311556641 is about 1322.2132751290.

The spelling of 2311556641 in words is "two billion, three hundred eleven million, five hundred fifty-six thousand, six hundred forty-one".