3147229 has 2 divisors, whose sum is σ = 3147230. Its totient is φ = 3147228.

The previous prime is 3147223. The next prime is 3147233. The reversal of 3147229 is 9227413.

3147229 = T₁₄₄₇ + T₁₄₄₈ + T₁₄₄₉.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1695204 + 1452025 = 1302^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 3147229 - 2⁵ = 3147197 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3147197 and 3147206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3147223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1573614 + 1573615.

It is an arithmetic number, because the mean of its divisors is an integer number (1573615).

Almost surely, 2^3147229 is an apocalyptic number.

3147229 is the 1449-th centered triangular number.

It is an amenable number.

3147229 is a deficient number, since it is larger than the sum of its proper divisors (1).

3147229 is an equidigital number, since it uses as much as digits as its factorization.

3147229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 3147229 is about 1774.0431223620. The cubic root of 3147229 is about 146.5467241382.

The spelling of 3147229 in words is "three million, one hundred forty-seven thousand, two hundred twenty-nine".