11311023313 has 2 divisors, whose sum is σ = 11311023314. Its totient is φ = 11311023312.

The previous prime is 11311023301. The next prime is 11311023319. The reversal of 11311023313 is 31332011311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7929368209 + 3381655104 = 89047^2 + 58152^2 .

It is an emirp because it is prime and its reverse (31332011311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11311023313 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311023319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655511656 + 5655511657.

It is an arithmetic number, because the mean of its divisors is an integer number (5655511657).

Almost surely, 2^11311023313 is an apocalyptic number.

It is an amenable number.

11311023313 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311023313 is an equidigital number, since it uses as much as digits as its factorization.

11311023313 is an evil number, because the sum of its binary digits is even.

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

Adding to 11311023313 its reverse (31332011311), we get a palindrome (42643034624).

The spelling of 11311023313 in words is "eleven billion, three hundred eleven million, twenty-three thousand, three hundred thirteen".