313213171 has 2 divisors, whose sum is σ = 313213172. Its totient is φ = 313213170.

The previous prime is 313213169. The next prime is 313213183. The reversal of 313213171 is 171312313.

It is a weak prime.

It is an emirp because it is prime and its reverse (171312313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313213171 - 2¹ = 313213169 is a prime.

Together with 313213169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (313213871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156606585 + 156606586.

It is an arithmetic number, because the mean of its divisors is an integer number (156606586).

Almost surely, 2^313213171 is an apocalyptic number.

313213171 is a deficient number, since it is larger than the sum of its proper divisors (1).

313213171 is an equidigital number, since it uses as much as digits as its factorization.

313213171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378, while the sum is 22.

The square root of 313213171 is about 17697.8295561913. The cubic root of 313213171 is about 679.1202369923.

Adding to 313213171 its reverse (171312313), we get a palindrome (484525484).

The spelling of 313213171 in words is "three hundred thirteen million, two hundred thirteen thousand, one hundred seventy-one".