6981313 has 2 divisors, whose sum is σ = 6981314. Its totient is φ = 6981312.

The previous prime is 6981301. The next prime is 6981323. The reversal of 6981313 is 3131896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4443664 + 2537649 = 2108^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 6981313 - 2¹³ = 6973121 is a prime.

It is not a weakly prime, because it can be changed into another prime (6981323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3490656 + 3490657.

It is an arithmetic number, because the mean of its divisors is an integer number (3490657).

Almost surely, 2^6981313 is an apocalyptic number.

It is an amenable number.

6981313 is a deficient number, since it is larger than the sum of its proper divisors (1).

6981313 is an equidigital number, since it uses as much as digits as its factorization.

6981313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 6981313 is about 2642.2174399546. The cubic root of 6981313 is about 191.1227430299.

The spelling of 6981313 in words is "six million, nine hundred eighty-one thousand, three hundred thirteen".