213025323406 has 16 divisors (see below), whose sum is σ = 376966471680. Its totient is φ = 88351516440.

The previous prime is 213025323361. The next prime is 213025323449. The reversal of 213025323406 is 604323520312.

213025323406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 245420446 + ... + 245421313.

It is an arithmetic number, because the mean of its divisors is an integer number (23560404480).

Almost surely, 2^213025323406 is an apocalyptic number.

213025323406 is a deficient number, since it is larger than the sum of its proper divisors (163941148274).

213025323406 is a wasteful number, since it uses less digits than its factorization.

213025323406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490841799.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 213025323406 its reverse (604323520312), we get a palindrome (817348843718).

The spelling of 213025323406 in words is "two hundred thirteen billion, twenty-five million, three hundred twenty-three thousand, four hundred six".