12704531 has 8 divisors (see below), whose sum is σ = 14757984. Its totient is φ = 10710720.

The previous prime is 12704507. The next prime is 12704537. The reversal of 12704531 is 13540721.

12704531 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 12704531 - 2⁶ = 12704467 is a prime.

It is a super-2 number, since 2×12704531² = 322810215859922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12704497 and 12704506.

It is not an unprimeable number, because it can be changed into a prime (12704537) 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, 14450 + ... + 15303.

It is an arithmetic number, because the mean of its divisors is an integer number (1844748).

Almost surely, 2^12704531 is an apocalyptic number.

12704531 is a deficient number, since it is larger than the sum of its proper divisors (2053453).

12704531 is an equidigital number, since it uses as much as digits as its factorization.

12704531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29821.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12704531 is about 3564.3415941798. The cubic root of 12704531 is about 233.3383983028.

The spelling of 12704531 in words is "twelve million, seven hundred four thousand, five hundred thirty-one".