313828189 has 4 divisors (see below), whose sum is σ = 313904700. Its totient is φ = 313751680.

The previous prime is 313828183. The next prime is 313828199. The reversal of 313828189 is 981828313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 981828313 = 4201 ⋅233713.

It can be written as a sum of positive squares in 2 ways, for example, as 129004164 + 184824025 = 11358^2 + 13595^2 .

It is a cyclic number.

It is not a de Polignac number, because 313828189 - 2¹⁷ = 313697117 is a prime.

It is a super-2 number, since 2×313828189² = 196976264422039442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313828183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31732 + ... + 40429.

It is an arithmetic number, because the mean of its divisors is an integer number (78476175).

Almost surely, 2^313828189 is an apocalyptic number.

It is an amenable number.

313828189 is a deficient number, since it is larger than the sum of its proper divisors (76511).

313828189 is an equidigital number, since it uses as much as digits as its factorization.

313828189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76510.

The product of its digits is 82944, while the sum is 43.

The square root of 313828189 is about 17715.1965555000. The cubic root of 313828189 is about 679.5644478684.

The spelling of 313828189 in words is "three hundred thirteen million, eight hundred twenty-eight thousand, one hundred eighty-nine".