213402001 has 2 divisors, whose sum is σ = 213402002. Its totient is φ = 213402000.

The previous prime is 213401963. The next prime is 213402029. The reversal of 213402001 is 100204312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125417601 + 87984400 = 11199^2 + 9380^2 .

It is a cyclic number.

It is not a de Polignac number, because 213402001 - 2⁷ = 213401873 is a prime.

It is not a weakly prime, because it can be changed into another prime (213402031) 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 as a sum of consecutive naturals, namely, 106701000 + 106701001.

It is an arithmetic number, because the mean of its divisors is an integer number (106701001).

Almost surely, 2^213402001 is an apocalyptic number.

It is an amenable number.

213402001 is a deficient number, since it is larger than the sum of its proper divisors (1).

213402001 is an equidigital number, since it uses as much as digits as its factorization.

213402001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 213402001 is about 14608.2853545514. The cubic root of 213402001 is about 597.5847359152.

Adding to 213402001 its reverse (100204312), we get a palindrome (313606313).

The spelling of 213402001 in words is "two hundred thirteen million, four hundred two thousand, one".