15380213 has 2 divisors, whose sum is σ = 15380214. Its totient is φ = 15380212.

The previous prime is 15380203. The next prime is 15380221. The reversal of 15380213 is 31208351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15311569 + 68644 = 3913^2 + 262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15380213 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15380203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7690106 + 7690107.

It is an arithmetic number, because the mean of its divisors is an integer number (7690107).

Almost surely, 2^15380213 is an apocalyptic number.

It is an amenable number.

15380213 is a deficient number, since it is larger than the sum of its proper divisors (1).

15380213 is an equidigital number, since it uses as much as digits as its factorization.

15380213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 15380213 is about 3921.7614664842. The cubic root of 15380213 is about 248.6875917275.

Adding to 15380213 its reverse (31208351), we get a palindrome (46588564).

The spelling of 15380213 in words is "fifteen million, three hundred eighty thousand, two hundred thirteen".