365987213 has 2 divisors, whose sum is σ = 365987214. Its totient is φ = 365987212.

The previous prime is 365987173. The next prime is 365987231. The reversal of 365987213 is 312789563.

Together with next prime (365987231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238455364 + 127531849 = 15442^2 + 11293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-365987213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (365987243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182993606 + 182993607.

It is an arithmetic number, because the mean of its divisors is an integer number (182993607).

Almost surely, 2^365987213 is an apocalyptic number.

It is an amenable number.

365987213 is a deficient number, since it is larger than the sum of its proper divisors (1).

365987213 is an equidigital number, since it uses as much as digits as its factorization.

365987213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 365987213 is about 19130.7922731914. The cubic root of 365987213 is about 715.3006791190.

The spelling of 365987213 in words is "three hundred sixty-five million, nine hundred eighty-seven thousand, two hundred thirteen".