12904273731 has 8 divisors (see below), whose sum is σ = 17487759184. Its totient is φ = 8461818720.

The previous prime is 12904273721. The next prime is 12904273751. The reversal of 12904273731 is 13737240921.

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

It is not a de Polignac number, because 12904273731 - 2⁹ = 12904273219 is a prime.

It is a super-2 number, since 2×12904273731² (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 12904273731.

It is not an unprimeable number, because it can be changed into a prime (12904273721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35257396 + ... + 35257761.

It is an arithmetic number, because the mean of its divisors is an integer number (2185969898).

Almost surely, 2^12904273731 is an apocalyptic number.

12904273731 is a deficient number, since it is larger than the sum of its proper divisors (4583485453).

12904273731 is an equidigital number, since it uses as much as digits as its factorization.

12904273731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70515221.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 12904273731 in words is "twelve billion, nine hundred four million, two hundred seventy-three thousand, seven hundred thirty-one".