11504530231 has 4 divisors (see below), whose sum is σ = 11901238200. Its totient is φ = 11107822264.

The previous prime is 11504530199. The next prime is 11504530237. The reversal of 11504530231 is 13203540511.

It is a happy number.

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 11504530231 - 2⁵ = 11504530199 is a prime.

It is a super-2 number, since 2×11504530231² (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 = 11504530196 and 11504530205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11504530237) 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, 198353941 + ... + 198353998.

It is an arithmetic number, because the mean of its divisors is an integer number (2975309550).

Almost surely, 2^11504530231 is an apocalyptic number.

11504530231 is a deficient number, since it is larger than the sum of its proper divisors (396707969).

11504530231 is an equidigital number, since it uses as much as digits as its factorization.

11504530231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396707968.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 11504530231 in words is "eleven billion, five hundred four million, five hundred thirty thousand, two hundred thirty-one".