2311542161 has 2 divisors, whose sum is σ = 2311542162. Its totient is φ = 2311542160.

The previous prime is 2311542119. The next prime is 2311542193. The reversal of 2311542161 is 1612451132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1540091536 + 771450625 = 39244^2 + 27775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311542161 - 2¹⁸ = 2311280017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2311542161.

It is not a weakly prime, because it can be changed into another prime (2311542361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155771080 + 1155771081.

It is an arithmetic number, because the mean of its divisors is an integer number (1155771081).

Almost surely, 2^2311542161 is an apocalyptic number.

It is an amenable number.

2311542161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311542161 is an equidigital number, since it uses as much as digits as its factorization.

2311542161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 2311542161 is about 48078.4999870004. The cubic root of 2311542161 is about 1322.2105142639.

Adding to 2311542161 its reverse (1612451132), we get a palindrome (3923993293).

The spelling of 2311542161 in words is "two billion, three hundred eleven million, five hundred forty-two thousand, one hundred sixty-one".