12731761 has 8 divisors (see below), whose sum is σ = 14589440. Its totient is φ = 10883808.

The previous prime is 12731753. The next prime is 12731773. The reversal of 12731761 is 16713721.

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 12731761 - 2³ = 12731753 is a prime.

It is a super-2 number, since 2×12731761² = 324195476322242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12731701) 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, 640 + ... + 5086.

It is an arithmetic number, because the mean of its divisors is an integer number (1823680).

Almost surely, 2^12731761 is an apocalyptic number.

It is an amenable number.

12731761 is a deficient number, since it is larger than the sum of its proper divisors (1857679).

12731761 is an equidigital number, since it uses as much as digits as its factorization.

12731761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4863.

The product of its digits is 1764, while the sum is 28.

The square root of 12731761 is about 3568.1593294022. The cubic root of 12731761 is about 233.5049863899.

The spelling of 12731761 in words is "twelve million, seven hundred thirty-one thousand, seven hundred sixty-one".