2312153665 has 8 divisors (see below), whose sum is σ = 2777739048. Its totient is φ = 1847619840.

The previous prime is 2312153651. The next prime is 2312153677. The reversal of 2312153665 is 5663512132.

It can be written as a sum of positive squares in 4 ways, for example, as 69089344 + 2243064321 = 8312^2 + 47361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2312153665 - 2⁵ = 2312153633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2312153665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258042 + ... + 266851.

It is an arithmetic number, because the mean of its divisors is an integer number (347217381).

Almost surely, 2^2312153665 is an apocalyptic number.

It is an amenable number.

2312153665 is a deficient number, since it is larger than the sum of its proper divisors (465585383).

2312153665 is an equidigital number, since it uses as much as digits as its factorization.

2312153665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525779.

The product of its digits is 32400, while the sum is 34.

The square root of 2312153665 is about 48084.8589994813. The cubic root of 2312153665 is about 1322.3270981539.

Adding to 2312153665 its reverse (5663512132), we get a palindrome (7975665797).

The spelling of 2312153665 in words is "two billion, three hundred twelve million, one hundred fifty-three thousand, six hundred sixty-five".