2311325565 has 16 divisors (see below), whose sum is σ = 3710019456. Its totient is φ = 1228740800.

The previous prime is 2311325561. The next prime is 2311325567. The reversal of 2311325565 is 5655231132.

It is a happy number.

It is not a de Polignac number, because 2311325565 - 2² = 2311325561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311325561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243066 + ... + 252395.

It is an arithmetic number, because the mean of its divisors is an integer number (231876216).

Almost surely, 2^2311325565 is an apocalyptic number.

It is an amenable number.

2311325565 is a deficient number, since it is larger than the sum of its proper divisors (1398693891).

2311325565 is a wasteful number, since it uses less digits than its factorization.

2311325565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495780.

The product of its digits is 27000, while the sum is 33.

The square root of 2311325565 is about 48076.2474097137. The cubic root of 2311325565 is about 1322.1692150743.

Adding to 2311325565 its reverse (5655231132), we get a palindrome (7966556697).

The spelling of 2311325565 in words is "two billion, three hundred eleven million, three hundred twenty-five thousand, five hundred sixty-five".