12731120747 has 4 divisors (see below), whose sum is σ = 13284647760. Its totient is φ = 12177593736.

The previous prime is 12731120741. The next prime is 12731120761. The reversal of 12731120747 is 74702113721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74702113721 = 67003 ⋅1114907.

It is a cyclic number.

It is not a de Polignac number, because 12731120747 - 2⁸ = 12731120491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12731120741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276763472 + ... + 276763517.

It is an arithmetic number, because the mean of its divisors is an integer number (3321161940).

Almost surely, 2^12731120747 is an apocalyptic number.

12731120747 is a deficient number, since it is larger than the sum of its proper divisors (553527013).

12731120747 is an equidigital number, since it uses as much as digits as its factorization.

12731120747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553527012.

The product of its (nonzero) digits is 16464, while the sum is 35.

The spelling of 12731120747 in words is "twelve billion, seven hundred thirty-one million, one hundred twenty thousand, seven hundred forty-seven".