313321187 has 2 divisors, whose sum is σ = 313321188. Its totient is φ = 313321186.

The previous prime is 313321181. The next prime is 313321231. The reversal of 313321187 is 781123313.

It is a weak prime.

It is an emirp because it is prime and its reverse (781123313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313321187 - 2⁴ = 313321171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313321181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156660593 + 156660594.

It is an arithmetic number, because the mean of its divisors is an integer number (156660594).

Almost surely, 2^313321187 is an apocalyptic number.

313321187 is a deficient number, since it is larger than the sum of its proper divisors (1).

313321187 is an equidigital number, since it uses as much as digits as its factorization.

313321187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 313321187 is about 17700.8809667768. The cubic root of 313321187 is about 679.1982960985.

The spelling of 313321187 in words is "three hundred thirteen million, three hundred twenty-one thousand, one hundred eighty-seven".