11501042231 has 8 divisors (see below), whose sum is σ = 13145080320. Its totient is φ = 9857262168.

The previous prime is 11501042219. The next prime is 11501042233. The reversal of 11501042231 is 13224010511.

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 11501042231 - 2⁶ = 11501042167 is a prime.

It is a super-2 number, since 2×11501042231² (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 (11501042233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42950 + ... + 157628.

It is an arithmetic number, because the mean of its divisors is an integer number (1643135040).

Almost surely, 2^11501042231 is an apocalyptic number.

11501042231 is a deficient number, since it is larger than the sum of its proper divisors (1644038089).

11501042231 is a wasteful number, since it uses less digits than its factorization.

11501042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129013.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11501042231 its reverse (13224010511), we get a palindrome (24725052742).

The spelling of 11501042231 in words is "eleven billion, five hundred one million, forty-two thousand, two hundred thirty-one".