12731199001 has 8 divisors (see below), whose sum is σ = 12759300680. Its totient is φ = 12703122432.

The previous prime is 12731198999. The next prime is 12731199007. The reversal of 12731199001 is 10099113721.

It can be written as a sum of positive squares in 4 ways, for example, as 147744025 + 12583454976 = 12155^2 + 112176^2 .

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 12731199001 - 2¹ = 12731198999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12731199007) 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, 1290355 + ... + 1300183.

It is an arithmetic number, because the mean of its divisors is an integer number (1594912585).

Almost surely, 2^12731199001 is an apocalyptic number.

It is an amenable number.

12731199001 is a deficient number, since it is larger than the sum of its proper divisors (28101679).

12731199001 is an equidigital number, since it uses as much as digits as its factorization.

12731199001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12555.

The product of its (nonzero) digits is 3402, while the sum is 34.

The spelling of 12731199001 in words is "twelve billion, seven hundred thirty-one million, one hundred ninety-nine thousand, one".