12017025831 has 16 divisors (see below), whose sum is σ = 16795215360. Its totient is φ = 7634182080.

The previous prime is 12017025827. The next prime is 12017025833. The reversal of 12017025831 is 13852071021.

It is not a de Polignac number, because 12017025831 - 2² = 12017025827 is a prime.

It is a super-2 number, since 2×12017025831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12017025833) 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, 1130751 + ... + 1141328.

It is an arithmetic number, because the mean of its divisors is an integer number (1049700960).

Almost surely, 2^12017025831 is an apocalyptic number.

12017025831 is a deficient number, since it is larger than the sum of its proper divisors (4778189529).

12017025831 is a wasteful number, since it uses less digits than its factorization.

12017025831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272166.

The product of its (nonzero) digits is 3360, while the sum is 30.

Adding to 12017025831 its reverse (13852071021), we get a palindrome (25869096852).

The spelling of 12017025831 in words is "twelve billion, seventeen million, twenty-five thousand, eight hundred thirty-one".