11013143231 has 2 divisors, whose sum is σ = 11013143232. Its totient is φ = 11013143230.

The previous prime is 11013143227. The next prime is 11013143243. The reversal of 11013143231 is 13234131011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11013143231 - 2² = 11013143227 is a prime.

It is a super-2 number, since 2×11013143231² (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 (11013146231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506571615 + 5506571616.

It is an arithmetic number, because the mean of its divisors is an integer number (5506571616).

Almost surely, 2^11013143231 is an apocalyptic number.

11013143231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11013143231 is an equidigital number, since it uses as much as digits as its factorization.

11013143231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 11013143231 its reverse (13234131011), we get a palindrome (24247274242).

The spelling of 11013143231 in words is "eleven billion, thirteen million, one hundred forty-three thousand, two hundred thirty-one".