12352981 has 2 divisors, whose sum is σ = 12352982. Its totient is φ = 12352980.

The previous prime is 12352979. The next prime is 12353017. The reversal of 12352981 is 18925321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9922500 + 2430481 = 3150^2 + 1559^2 .

It is an emirp because it is prime and its reverse (18925321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12352981 - 2¹ = 12352979 is a prime.

It is a super-2 number, since 2×12352981² = 305192279172722, which contains 22 as substring.

Together with 12352979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12352381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6176490 + 6176491.

It is an arithmetic number, because the mean of its divisors is an integer number (6176491).

Almost surely, 2^12352981 is an apocalyptic number.

It is an amenable number.

12352981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12352981 is an equidigital number, since it uses as much as digits as its factorization.

12352981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 12352981 is about 3514.6807820910. The cubic root of 12352981 is about 231.1659820421.

The spelling of 12352981 in words is "twelve million, three hundred fifty-two thousand, nine hundred eighty-one".