12930981 has 8 divisors (see below), whose sum is σ = 19704384. Its totient is φ = 7389120.

The previous prime is 12930979. The next prime is 12931007. The reversal of 12930981 is 18903921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12930981 - 2¹ = 12930979 is a prime.

It is a super-2 number, since 2×12930981² = 334420539244722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12930941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307860 + ... + 307901.

It is an arithmetic number, because the mean of its divisors is an integer number (2463048).

Almost surely, 2^12930981 is an apocalyptic number.

It is an amenable number.

12930981 is a deficient number, since it is larger than the sum of its proper divisors (6773403).

12930981 is an equidigital number, since it uses as much as digits as its factorization.

12930981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615771.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 12930981 is about 3595.9673246569. The cubic root of 12930981 is about 234.7166102574.

The spelling of 12930981 in words is "twelve million, nine hundred thirty thousand, nine hundred eighty-one".