12280531 has 2 divisors, whose sum is σ = 12280532. Its totient is φ = 12280530.

The previous prime is 12280529. The next prime is 12280547. The reversal of 12280531 is 13508221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12280531 - 2¹ = 12280529 is a prime.

It is a super-2 number, since 2×12280531² = 301622883283922, which contains 22 as substring.

Together with 12280529, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12280561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6140265 + 6140266.

It is an arithmetic number, because the mean of its divisors is an integer number (6140266).

Almost surely, 2^12280531 is an apocalyptic number.

12280531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12280531 is an equidigital number, since it uses as much as digits as its factorization.

12280531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12280531 is about 3504.3588571949. The cubic root of 12280531 is about 230.7131675976.

Adding to 12280531 its reverse (13508221), we get a palindrome (25788752).

The spelling of 12280531 in words is "twelve million, two hundred eighty thousand, five hundred thirty-one".