215324413 has 4 divisors (see below), whose sum is σ = 224686368. Its totient is φ = 205962460.

The previous prime is 215324411. The next prime is 215324441. The reversal of 215324413 is 314423512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215324413 - 2¹ = 215324411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215324411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4680943 + ... + 4680988.

It is an arithmetic number, because the mean of its divisors is an integer number (56171592).

Almost surely, 2^215324413 is an apocalyptic number.

215324413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

215324413 is a deficient number, since it is larger than the sum of its proper divisors (9361955).

215324413 is an equidigital number, since it uses as much as digits as its factorization.

215324413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9361954.

The product of its digits is 2880, while the sum is 25.

The square root of 215324413 is about 14673.9365202389. The cubic root of 215324413 is about 599.3738031714.

Adding to 215324413 its reverse (314423512), we get a palindrome (529747925).

Subtracting 215324413 from its reverse (314423512), we obtain a palindrome (99099099).

The spelling of 215324413 in words is "two hundred fifteen million, three hundred twenty-four thousand, four hundred thirteen".