12740897731 has 8 divisors (see below), whose sum is σ = 13154355200. Its totient is φ = 12327594120.

The previous prime is 12740897711. The next prime is 12740897737. The reversal of 12740897731 is 13779804721.

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

It is a cyclic number.

It is not a de Polignac number, because 12740897731 - 2¹⁵ = 12740864963 is a prime.

It is a super-2 number, since 2×12740897731² (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 (12740897737) 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, 143590 + ... + 214708.

It is an arithmetic number, because the mean of its divisors is an integer number (1644294400).

Almost surely, 2^12740897731 is an apocalyptic number.

12740897731 is a deficient number, since it is larger than the sum of its proper divisors (413457469).

12740897731 is an equidigital number, since it uses as much as digits as its factorization.

12740897731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76929.

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 12740897731 in words is "twelve billion, seven hundred forty million, eight hundred ninety-seven thousand, seven hundred thirty-one".