11431115534 has 4 divisors (see below), whose sum is σ = 17146673304. Its totient is φ = 5715557766.

The previous prime is 11431115477. The next prime is 11431115567. The reversal of 11431115534 is 43551113411.

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

It is a super-2 number, since 2×11431115534² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11431115497 and 11431115506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2857778882 + ... + 2857778885.

It is an arithmetic number, because the mean of its divisors is an integer number (4286668326).

Almost surely, 2^11431115534 is an apocalyptic number.

11431115534 is a deficient number, since it is larger than the sum of its proper divisors (5715557770).

11431115534 is an equidigital number, since it uses as much as digits as its factorization.

11431115534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715557769.

The product of its digits is 3600, while the sum is 29.

Adding to 11431115534 its reverse (43551113411), we get a palindrome (54982228945).

The spelling of 11431115534 in words is "eleven billion, four hundred thirty-one million, one hundred fifteen thousand, five hundred thirty-four".