12020731 has 2 divisors, whose sum is σ = 12020732. Its totient is φ = 12020730.

The previous prime is 12020713. The next prime is 12020741. The reversal of 12020731 is 13702021.

It is a happy number.

Together with previous prime (12020713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12020731 - 2¹¹ = 12018683 is a prime.

It is a super-2 number, since 2×12020731² = 288995947548722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12020741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010365 + 6010366.

It is an arithmetic number, because the mean of its divisors is an integer number (6010366).

Almost surely, 2^12020731 is an apocalyptic number.

12020731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020731 is an equidigital number, since it uses as much as digits as its factorization.

12020731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 12020731 is about 3467.0925860150. The cubic root of 12020731 is about 229.0746119455.

Adding to 12020731 its reverse (13702021), we get a palindrome (25722752).

The spelling of 12020731 in words is "twelve million, twenty thousand, seven hundred thirty-one".