11131542143 has 4 divisors (see below), whose sum is σ = 11211625320. Its totient is φ = 11051458968.

The previous prime is 11131542131. The next prime is 11131542161. The reversal of 11131542143 is 34124513111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34124513111 = 13 ⋅2624962547.

It is a cyclic number.

It is not a de Polignac number, because 11131542143 - 2⁴ = 11131542127 is a prime.

It is a super-2 number, since 2×11131542143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131542343) 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, 40041380 + ... + 40041657.

It is an arithmetic number, because the mean of its divisors is an integer number (2802906330).

Almost surely, 2^11131542143 is an apocalyptic number.

11131542143 is a deficient number, since it is larger than the sum of its proper divisors (80083177).

11131542143 is an equidigital number, since it uses as much as digits as its factorization.

11131542143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80083176.

The product of its digits is 1440, while the sum is 26.

The spelling of 11131542143 in words is "eleven billion, one hundred thirty-one million, five hundred forty-two thousand, one hundred forty-three".