12313729 has 16 divisors (see below), whose sum is σ = 13953600. Its totient is φ = 10796544.

The previous prime is 12313709. The next prime is 12313747. The reversal of 12313729 is 92731321.

12313729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12313729 is a prime.

12313729 is a Rhonda number in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 12313697 and 12313706.

It is not an unprimeable number, because it can be changed into a prime (12313709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21357 + ... + 21925.

It is an arithmetic number, because the mean of its divisors is an integer number (872100).

Almost surely, 2^12313729 is an apocalyptic number.

12313729 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12313729 is a deficient number, since it is larger than the sum of its proper divisors (1639871).

12313729 is a wasteful number, since it uses less digits than its factorization.

12313729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 2268, while the sum is 28.

The square root of 12313729 is about 3509.0923327835. The cubic root of 12313729 is about 230.9208764325.

The spelling of 12313729 in words is "twelve million, three hundred thirteen thousand, seven hundred twenty-nine".