213500393 has 2 divisors, whose sum is σ = 213500394. Its totient is φ = 213500392.

The previous prime is 213500383. The next prime is 213500411. The reversal of 213500393 is 393005312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201299344 + 12201049 = 14188^2 + 3493^2 .

It is a cyclic number.

It is not a de Polignac number, because 213500393 - 2⁸ = 213500137 is a prime.

It is a super-2 number, since 2×213500393² = 91164835622308898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213500383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106750196 + 106750197.

It is an arithmetic number, because the mean of its divisors is an integer number (106750197).

Almost surely, 2^213500393 is an apocalyptic number.

It is an amenable number.

213500393 is a deficient number, since it is larger than the sum of its proper divisors (1).

213500393 is an equidigital number, since it uses as much as digits as its factorization.

213500393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 213500393 is about 14611.6526443794. The cubic root of 213500393 is about 597.6765634252.

The spelling of 213500393 in words is "two hundred thirteen million, five hundred thousand, three hundred ninety-three".