213043401 has 12 divisors (see below), whose sum is σ = 308217780. Its totient is φ = 141803520.

The previous prime is 213043399. The next prime is 213043423. The reversal of 213043401 is 104340312.

213043401 is a `hidden beast` number, since 21 + 304 + 340 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 175589001 + 37454400 = 13251^2 + 6120^2 .

It is not a de Polignac number, because 213043401 - 2¹ = 213043399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213043001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12696 + ... + 24233.

It is an arithmetic number, because the mean of its divisors is an integer number (25684815).

Almost surely, 2^213043401 is an apocalyptic number.

It is an amenable number.

213043401 is a deficient number, since it is larger than the sum of its proper divisors (95174379).

213043401 is a wasteful number, since it uses less digits than its factorization.

213043401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37576 (or 37573 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 213043401 is about 14596.0063373513. The cubic root of 213043401 is about 597.2498217932.

Adding to 213043401 its reverse (104340312), we get a palindrome (317383713).

It can be divided in two parts, 213043 and 401, that added together give a square (213444 = 462²).

The spelling of 213043401 in words is "two hundred thirteen million, forty-three thousand, four hundred one".