11342143231 has 4 divisors (see below), whose sum is σ = 11351830264. Its totient is φ = 11332456200.

The previous prime is 11342143171. The next prime is 11342143243. The reversal of 11342143231 is 13234124311.

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

It is a cyclic number.

It is not a de Polignac number, because 11342143231 - 2⁷ = 11342143103 is a prime.

It is a super-2 number, since 2×11342143231² (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 = 11342143196 and 11342143205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11342143261) 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, 4841760 + ... + 4844101.

It is an arithmetic number, because the mean of its divisors is an integer number (2837957566).

Almost surely, 2^11342143231 is an apocalyptic number.

11342143231 is a deficient number, since it is larger than the sum of its proper divisors (9687033).

11342143231 is an equidigital number, since it uses as much as digits as its factorization.

11342143231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9687032.

The product of its digits is 1728, while the sum is 25.

Adding to 11342143231 its reverse (13234124311), we get a palindrome (24576267542).

The spelling of 11342143231 in words is "eleven billion, three hundred forty-two million, one hundred forty-three thousand, two hundred thirty-one".