313478189 has 2 divisors, whose sum is σ = 313478190. Its totient is φ = 313478188.

The previous prime is 313478173. The next prime is 313478219. The reversal of 313478189 is 981874313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222904900 + 90573289 = 14930^2 + 9517^2 .

It is a cyclic number.

It is not a de Polignac number, because 313478189 - 2⁴ = 313478173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313478119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156739094 + 156739095.

It is an arithmetic number, because the mean of its divisors is an integer number (156739095).

Almost surely, 2^313478189 is an apocalyptic number.

It is an amenable number.

313478189 is a deficient number, since it is larger than the sum of its proper divisors (1).

313478189 is an equidigital number, since it uses as much as digits as its factorization.

313478189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 313478189 is about 17705.3152753629. The cubic root of 313478189 is about 679.3117235641.

The spelling of 313478189 in words is "three hundred thirteen million, four hundred seventy-eight thousand, one hundred eighty-nine".