2311397563 has 4 divisors (see below), whose sum is σ = 2340655840. Its totient is φ = 2282139288.

The previous prime is 2311397549. The next prime is 2311397567. The reversal of 2311397563 is 3657931132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2311397563 - 2²⁵ = 2277843131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311397567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14629020 + ... + 14629177.

It is an arithmetic number, because the mean of its divisors is an integer number (585163960).

Almost surely, 2^2311397563 is an apocalyptic number.

2311397563 is a deficient number, since it is larger than the sum of its proper divisors (29258277).

2311397563 is an equidigital number, since it uses as much as digits as its factorization.

2311397563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29258276.

The product of its digits is 102060, while the sum is 40.

The square root of 2311397563 is about 48076.9961936059. The cubic root of 2311397563 is about 1322.1829434952.

The spelling of 2311397563 in words is "two billion, three hundred eleven million, three hundred ninety-seven thousand, five hundred sixty-three".