2765131223 has 2 divisors, whose sum is σ = 2765131224. Its totient is φ = 2765131222.

The previous prime is 2765131217. The next prime is 2765131267. The reversal of 2765131223 is 3221315672.

2765131223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2765131223 - 2⁴ = 2765131207 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2765131223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2765131283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1382565611 + 1382565612.

It is an arithmetic number, because the mean of its divisors is an integer number (1382565612).

Almost surely, 2^2765131223 is an apocalyptic number.

2765131223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2765131223 is an equidigital number, since it uses as much as digits as its factorization.

2765131223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 2765131223 is about 52584.5150495847. The cubic root of 2765131223 is about 1403.5845596694.

Adding to 2765131223 its reverse (3221315672), we get a palindrome (5986446895).

The spelling of 2765131223 in words is "two billion, seven hundred sixty-five million, one hundred thirty-one thousand, two hundred twenty-three".