365213 has 2 divisors, whose sum is σ = 365214. Its totient is φ = 365212.

The previous prime is 365201. The next prime is 365231. The reversal of 365213 is 312563.

Together with next prime (365231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362404 + 2809 = 602^2 + 53^2 .

It is an emirp because it is prime and its reverse (312563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 365213 - 2¹⁸ = 103069 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 (365293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182606 + 182607.

It is an arithmetic number, because the mean of its divisors is an integer number (182607).

2³⁶⁵²¹³ is an apocalyptic number.

It is an amenable number.

365213 is a deficient number, since it is larger than the sum of its proper divisors (1).

365213 is an equidigital number, since it uses as much as digits as its factorization.

365213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 20.

The square root of 365213 is about 604.3285530239. The cubic root of 365213 is about 71.4795938310.

Adding to 365213 its reverse (312563), we get a palindrome (677776).

Subtracting from 365213 its reverse (312563), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 365213 in words is "three hundred sixty-five thousand, two hundred thirteen".