213900601 has 2 divisors, whose sum is σ = 213900602. Its totient is φ = 213900600.

The previous prime is 213900581. The next prime is 213900671. The reversal of 213900601 is 106009312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143424576 + 70476025 = 11976^2 + 8395^2 .

It is a cyclic number.

It is not a de Polignac number, because 213900601 - 2²³ = 205511993 is a prime.

It is a super-2 number, since 2×213900601² = 91506934216322402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213900671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106950300 + 106950301.

It is an arithmetic number, because the mean of its divisors is an integer number (106950301).

Almost surely, 2^213900601 is an apocalyptic number.

It is an amenable number.

213900601 is a deficient number, since it is larger than the sum of its proper divisors (1).

213900601 is an equidigital number, since it uses as much as digits as its factorization.

213900601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 213900601 is about 14625.3410558523. The cubic root of 213900601 is about 598.0497799747.

Adding to 213900601 its reverse (106009312), we get a palindrome (319909913).

The spelling of 213900601 in words is "two hundred thirteen million, nine hundred thousand, six hundred one".