313897 has 2 divisors, whose sum is σ = 313898. Its totient is φ = 313896.

The previous prime is 313889. The next prime is 313909. The reversal of 313897 is 798313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309136 + 4761 = 556^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 313897 - 2³ = 313889 is a prime.

It is not a weakly prime, because it can be changed into another prime (313297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156948 + 156949.

It is an arithmetic number, because the mean of its divisors is an integer number (156949).

2³¹³⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

313897 is a deficient number, since it is larger than the sum of its proper divisors (1).

313897 is an equidigital number, since it uses as much as digits as its factorization.

313897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 313897 is about 560.2651158157. The cubic root of 313897 is about 67.9614112083.

Subtracting 313897 from its reverse (798313), we obtain a square (484416 = 696²).

The spelling of 313897 in words is "three hundred thirteen thousand, eight hundred ninety-seven".