11115142331 has 2 divisors, whose sum is σ = 11115142332. Its totient is φ = 11115142330.

The previous prime is 11115142321. The next prime is 11115142373. The reversal of 11115142331 is 13324151111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11115142331 - 2¹⁴ = 11115125947 is a prime.

It is a super-2 number, since 2×11115142331² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 11115142297 and 11115142306.

It is not a weakly prime, because it can be changed into another prime (11115142321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5557571165 + 5557571166.

It is an arithmetic number, because the mean of its divisors is an integer number (5557571166).

Almost surely, 2^11115142331 is an apocalyptic number.

11115142331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11115142331 is an equidigital number, since it uses as much as digits as its factorization.

11115142331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 23.

Adding to 11115142331 its reverse (13324151111), we get a palindrome (24439293442).

The spelling of 11115142331 in words is "eleven billion, one hundred fifteen million, one hundred forty-two thousand, three hundred thirty-one".