23311313011 has 4 divisors (see below), whose sum is σ = 26641500592. Its totient is φ = 19981125432.

The previous prime is 23311312967. The next prime is 23311313089. The reversal of 23311313011 is 11031311332.

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 23311313011 - 2⁹ = 23311312499 is a prime.

It is a super-2 number, since 2×23311313011² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23311313011.

It is not an unprimeable number, because it can be changed into a prime (23311313411) 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, 1665093780 + ... + 1665093793.

It is an arithmetic number, because the mean of its divisors is an integer number (6660375148).

Almost surely, 2^23311313011 is an apocalyptic number.

23311313011 is a deficient number, since it is larger than the sum of its proper divisors (3330187581).

23311313011 is an equidigital number, since it uses as much as digits as its factorization.

23311313011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330187580.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 23311313011 its reverse (11031311332), we get a palindrome (34342624343).

The spelling of 23311313011 in words is "twenty-three billion, three hundred eleven million, three hundred thirteen thousand, eleven".