12684031 has 8 divisors (see below), whose sum is σ = 13005504. Its totient is φ = 12364800.

The previous prime is 12684029. The next prime is 12684037. The reversal of 12684031 is 13048621.

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 12684031 - 2¹ = 12684029 is a prime.

It is a super-2 number, since 2×12684031² = 321769284817922, 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 = 12683987 and 12684005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12684037) 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, 18511 + ... + 19183.

It is an arithmetic number, because the mean of its divisors is an integer number (1625688).

Almost surely, 2^12684031 is an apocalyptic number.

12684031 is a deficient number, since it is larger than the sum of its proper divisors (321473).

12684031 is an equidigital number, since it uses as much as digits as its factorization.

12684031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 12684031 is about 3561.4647267662. The cubic root of 12684031 is about 233.2128259821.

The spelling of 12684031 in words is "twelve million, six hundred eighty-four thousand, thirty-one".