11231042531 has 8 divisors (see below), whose sum is σ = 11738296320. Its totient is φ = 10725367752.

The previous prime is 11231042509. The next prime is 11231042597. The reversal of 11231042531 is 13524013211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11231042531 - 2¹⁸ = 11230780387 is a prime.

It is a super-2 number, since 2×11231042531² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11231042497 and 11231042506.

It is not an unprimeable number, because it can be changed into a prime (11231042131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380195 + ... + 408668.

It is an arithmetic number, because the mean of its divisors is an integer number (1467287040).

Almost surely, 2^11231042531 is an apocalyptic number.

11231042531 is a deficient number, since it is larger than the sum of its proper divisors (507253789).

11231042531 is an equidigital number, since it uses as much as digits as its factorization.

11231042531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789505.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 11231042531 its reverse (13524013211), we get a palindrome (24755055742).

The spelling of 11231042531 in words is "eleven billion, two hundred thirty-one million, forty-two thousand, five hundred thirty-one".