12729031 has 8 divisors (see below), whose sum is σ = 15313280. Its totient is φ = 10336248.

The previous prime is 12729029. The next prime is 12729061. The reversal of 12729031 is 13092721.

12729031 is digitally balanced in base 2, because in such base 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 12729031 - 2¹ = 12729029 is a prime.

It is a super-2 number, since 2×12729031² = 324056460397922, 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 = 12728987 and 12729005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12729061) 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, 47721 + ... + 47986.

It is an arithmetic number, because the mean of its divisors is an integer number (1914160).

Almost surely, 2^12729031 is an apocalyptic number.

12729031 is a deficient number, since it is larger than the sum of its proper divisors (2584249).

12729031 is an equidigital number, since it uses as much as digits as its factorization.

12729031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95733.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 12729031 is about 3567.7767587112. The cubic root of 12729031 is about 233.4882954759.

The spelling of 12729031 in words is "twelve million, seven hundred twenty-nine thousand, thirty-one".