12951971 has 8 divisors (see below), whose sum is σ = 13317120. Its totient is φ = 12592008.

The previous prime is 12951959. The next prime is 12951973. The reversal of 12951971 is 17915921.

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

It is a cyclic number.

It is not a de Polignac number, because 12951971 - 2⁶ = 12951907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12951973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4070 + ... + 6516.

It is an arithmetic number, because the mean of its divisors is an integer number (1664640).

Almost surely, 2^12951971 is an apocalyptic number.

12951971 is a deficient number, since it is larger than the sum of its proper divisors (365149).

12951971 is an equidigital number, since it uses as much as digits as its factorization.

12951971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its digits is 5670, while the sum is 35.

The square root of 12951971 is about 3598.8846883444. The cubic root of 12951971 is about 234.8435415480.

The spelling of 12951971 in words is "twelve million, nine hundred fifty-one thousand, nine hundred seventy-one".