213301381 has 2 divisors, whose sum is σ = 213301382. Its totient is φ = 213301380.

The previous prime is 213301367. The next prime is 213301427. The reversal of 213301381 is 183103312.

213301381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178089025 + 35212356 = 13345^2 + 5934^2 .

It is a cyclic number.

It is not a de Polignac number, because 213301381 - 2⁵ = 213301349 is a prime.

It is a super-2 number, since 2×213301381² = 90994958273014322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213301331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106650690 + 106650691.

It is an arithmetic number, because the mean of its divisors is an integer number (106650691).

Almost surely, 2^213301381 is an apocalyptic number.

It is an amenable number.

213301381 is a deficient number, since it is larger than the sum of its proper divisors (1).

213301381 is an equidigital number, since it uses as much as digits as its factorization.

213301381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 213301381 is about 14604.8410124862. The cubic root of 213301381 is about 597.4907998560.

Adding to 213301381 its reverse (183103312), we get a palindrome (396404693).

The spelling of 213301381 in words is "two hundred thirteen million, three hundred one thousand, three hundred eighty-one".