213001405 has 8 divisors (see below), whose sum is σ = 256032000. Its totient is φ = 170114256.

The previous prime is 213001379. The next prime is 213001423. The reversal of 213001405 is 504100312.

213001405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213001405 - 2²³ = 204612797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32565 + ... + 38554.

It is an arithmetic number, because the mean of its divisors is an integer number (32004000).

Almost surely, 2^213001405 is an apocalyptic number.

It is an amenable number.

213001405 is a deficient number, since it is larger than the sum of its proper divisors (43030595).

213001405 is an equidigital number, since it uses as much as digits as its factorization.

213001405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71723.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 213001405 is about 14594.5676537539. The cubic root of 213001405 is about 597.2105750924.

Adding to 213001405 its reverse (504100312), we get a palindrome (717101717).

The spelling of 213001405 in words is "two hundred thirteen million, one thousand, four hundred five".