11431254531 has 16 divisors (see below), whose sum is σ = 15271213824. Its totient is φ = 7606084704.

The previous prime is 11431254511. The next prime is 11431254577. The reversal of 11431254531 is 13545213411.

It is not a de Polignac number, because 11431254531 - 2⁶ = 11431254467 is a prime.

It is a super-2 number, since 2×11431254531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11431254511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6121860 + ... + 6123726.

It is an arithmetic number, because the mean of its divisors is an integer number (954450864).

Almost surely, 2^11431254531 is an apocalyptic number.

11431254531 is a deficient number, since it is larger than the sum of its proper divisors (3839959293).

11431254531 is a wasteful number, since it uses less digits than its factorization.

11431254531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730.

The product of its digits is 7200, while the sum is 30.

Adding to 11431254531 its reverse (13545213411), we get a palindrome (24976467942).

The spelling of 11431254531 in words is "eleven billion, four hundred thirty-one million, two hundred fifty-four thousand, five hundred thirty-one".