12091304731 has 8 divisors (see below), whose sum is σ = 13191637824. Its totient is φ = 10991158920.

The previous prime is 12091304707. The next prime is 12091304737. The reversal of 12091304731 is 13740319021.

12091304731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12091304731 is a prime.

It is a super-2 number, since 2×12091304731² (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 = 12091304693 and 12091304702.

It is not an unprimeable number, because it can be changed into a prime (12091304737) 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 7 ways as a sum of consecutive naturals, for example, 111460 + ... + 191326.

It is an arithmetic number, because the mean of its divisors is an integer number (1648954728).

Almost surely, 2^12091304731 is an apocalyptic number.

12091304731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12091304731 is a deficient number, since it is larger than the sum of its proper divisors (1100333093).

12091304731 is a wasteful number, since it uses less digits than its factorization.

12091304731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93641.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 12091304731 in words is "twelve billion, ninety-one million, three hundred four thousand, seven hundred thirty-one".