11142043131 has 4 divisors (see below), whose sum is σ = 14856057512. Its totient is φ = 7428028752.

The previous prime is 11142043127. The next prime is 11142043141. The reversal of 11142043131 is 13134024111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11142043131 - 2² = 11142043127 is a prime.

It is a super-2 number, since 2×11142043131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11142043098 and 11142043107.

It is not an unprimeable number, because it can be changed into a prime (11142043141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1857007186 + ... + 1857007191.

It is an arithmetic number, because the mean of its divisors is an integer number (3714014378).

Almost surely, 2^11142043131 is an apocalyptic number.

11142043131 is a deficient number, since it is larger than the sum of its proper divisors (3714014381).

11142043131 is an equidigital number, since it uses as much as digits as its factorization.

11142043131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714014380.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 11142043131 its reverse (13134024111), we get a palindrome (24276067242).

The spelling of 11142043131 in words is "eleven billion, one hundred forty-two million, forty-three thousand, one hundred thirty-one".