11111230331 has 2 divisors, whose sum is σ = 11111230332. Its totient is φ = 11111230330.

The previous prime is 11111230321. The next prime is 11111230349. The reversal of 11111230331 is 13303211111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111230331 - 2²² = 11107036027 is a prime.

It is a super-2 number, since 2×11111230331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11111230321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555615165 + 5555615166.

It is an arithmetic number, because the mean of its divisors is an integer number (5555615166).

Almost surely, 2^11111230331 is an apocalyptic number.

11111230331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111230331 is an equidigital number, since it uses as much as digits as its factorization.

11111230331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11111230331 its reverse (13303211111), we get a palindrome (24414441442).

The spelling of 11111230331 in words is "eleven billion, one hundred eleven million, two hundred thirty thousand, three hundred thirty-one".