12111883731 has 24 divisors (see below), whose sum is σ = 17792933600. Its totient is φ = 7937222400.

The previous prime is 12111883649. The next prime is 12111883781. The reversal of 12111883731 is 13738811121.

It is not a de Polignac number, because 12111883731 - 2⁷ = 12111883603 is a prime.

It is a super-2 number, since 2×12111883731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111883781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999195 + ... + 1011243.

Almost surely, 2^12111883731 is an apocalyptic number.

12111883731 is a deficient number, since it is larger than the sum of its proper divisors (5681049869).

12111883731 is a wasteful number, since it uses less digits than its factorization.

12111883731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13947 (or 13944 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The spelling of 12111883731 in words is "twelve billion, one hundred eleven million, eight hundred eighty-three thousand, seven hundred thirty-one".