12000731 has 2 divisors, whose sum is σ = 12000732. Its totient is φ = 12000730.

The previous prime is 12000683. The next prime is 12000739. The reversal of 12000731 is 13700021.

It is a strong prime.

It is an emirp because it is prime and its reverse (13700021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12000731 - 2¹⁴ = 11984347 is a prime.

It is a super-2 number, since 2×12000731² = 288035089068722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12000739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000365 + 6000366.

It is an arithmetic number, because the mean of its divisors is an integer number (6000366).

Almost surely, 2^12000731 is an apocalyptic number.

12000731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000731 is an equidigital number, since it uses as much as digits as its factorization.

12000731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 12000731 is about 3464.2071242927. The cubic root of 12000731 is about 228.9474972280.

Adding to 12000731 its reverse (13700021), we get a palindrome (25700752).

The spelling of 12000731 in words is "twelve million, seven hundred thirty-one", and thus it is an aban number.