12031737981 has 16 divisors (see below), whose sum is σ = 16992360000. Its totient is φ = 7546491648.

The previous prime is 12031737917. The next prime is 12031738001. The reversal of 12031737981 is 18973713021.

12031737981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12031737981 - 2⁶ = 12031737917 is a prime.

It is a super-2 number, since 2×12031737981² (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 (12031737901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97290 + ... + 183108.

It is an arithmetic number, because the mean of its divisors is an integer number (1062022500).

Almost surely, 2^12031737981 is an apocalyptic number.

It is an amenable number.

12031737981 is a deficient number, since it is larger than the sum of its proper divisors (4960622019).

12031737981 is a wasteful number, since it uses less digits than its factorization.

12031737981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88588.

The product of its (nonzero) digits is 63504, while the sum is 42.

The spelling of 12031737981 in words is "twelve billion, thirty-one million, seven hundred thirty-seven thousand, nine hundred eighty-one".