102320213 has 4 divisors (see below), whose sum is σ = 102378828. Its totient is φ = 102261600.

The previous prime is 102320201. The next prime is 102320279. The reversal of 102320213 is 312023201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64288324 + 38031889 = 8018^2 + 6167^2 .

It is a cyclic number.

It is not a de Polignac number, because 102320213 - 2¹² = 102316117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102320293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26606 + ... + 30207.

It is an arithmetic number, because the mean of its divisors is an integer number (25594707).

Almost surely, 2^102320213 is an apocalyptic number.

It is an amenable number.

102320213 is a deficient number, since it is larger than the sum of its proper divisors (58615).

102320213 is an equidigital number, since it uses as much as digits as its factorization.

102320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58614.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 102320213 is about 10115.3454216848. The cubic root of 102320213 is about 467.7212968523.

Adding to 102320213 its reverse (312023201), we get a palindrome (414343414).

The spelling of 102320213 in words is "one hundred two million, three hundred twenty thousand, two hundred thirteen".