213015423 has 8 divisors (see below), whose sum is σ = 300727728. Its totient is φ = 133656704.

The previous prime is 213015391. The next prime is 213015431. The reversal of 213015423 is 324510312.

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 213015423 - 2⁵ = 213015391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213015423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213015463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2088336 + ... + 2088437.

It is an arithmetic number, because the mean of its divisors is an integer number (37590966).

Almost surely, 2^213015423 is an apocalyptic number.

213015423 is a deficient number, since it is larger than the sum of its proper divisors (87712305).

213015423 is a wasteful number, since it uses less digits than its factorization.

213015423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176793.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 213015423 is about 14595.0478930355. The cubic root of 213015423 is about 597.2236759672.

Adding to 213015423 its reverse (324510312), we get a palindrome (537525735).

The spelling of 213015423 in words is "two hundred thirteen million, fifteen thousand, four hundred twenty-three".