11885334231 has 4 divisors (see below), whose sum is σ = 15847112312. Its totient is φ = 7923556152.

The previous prime is 11885334229. The next prime is 11885334239. The reversal of 11885334231 is 13243358811.

It is a happy number.

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

It is not a de Polignac number, because 11885334231 - 2¹ = 11885334229 is a prime.

It is a super-2 number, since 2×11885334231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11885334231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11885334239) 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, 1980889036 + ... + 1980889041.

It is an arithmetic number, because the mean of its divisors is an integer number (3961778078).

Almost surely, 2^11885334231 is an apocalyptic number.

11885334231 is a deficient number, since it is larger than the sum of its proper divisors (3961778081).

11885334231 is an equidigital number, since it uses as much as digits as its factorization.

11885334231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961778080.

The product of its digits is 69120, while the sum is 39.

The spelling of 11885334231 in words is "eleven billion, eight hundred eighty-five million, three hundred thirty-four thousand, two hundred thirty-one".