11311221307 has 2 divisors, whose sum is σ = 11311221308. Its totient is φ = 11311221306.

The previous prime is 11311221287. The next prime is 11311221373. The reversal of 11311221307 is 70312211311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11311221307 - 2⁷ = 11311221179 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311221107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655610653 + 5655610654.

It is an arithmetic number, because the mean of its divisors is an integer number (5655610654).

Almost surely, 2^11311221307 is an apocalyptic number.

11311221307 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311221307 is an equidigital number, since it uses as much as digits as its factorization.

11311221307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

Adding to 11311221307 its reverse (70312211311), we get a palindrome (81623432618).

The spelling of 11311221307 in words is "eleven billion, three hundred eleven million, two hundred twenty-one thousand, three hundred seven".