11124131231 has 2 divisors, whose sum is σ = 11124131232. Its totient is φ = 11124131230.

The previous prime is 11124131197. The next prime is 11124131269. The reversal of 11124131231 is 13213142111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11124131231 - 2⁶ = 11124131167 is a prime.

It is a super-2 number, since 2×11124131231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11124131131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5562065615 + 5562065616.

It is an arithmetic number, because the mean of its divisors is an integer number (5562065616).

Almost surely, 2^11124131231 is an apocalyptic number.

11124131231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11124131231 is an equidigital number, since it uses as much as digits as its factorization.

11124131231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

Adding to 11124131231 its reverse (13213142111), we get a palindrome (24337273342).

The spelling of 11124131231 in words is "eleven billion, one hundred twenty-four million, one hundred thirty-one thousand, two hundred thirty-one".