215430323 has 2 divisors, whose sum is σ = 215430324. Its totient is φ = 215430322.

The previous prime is 215430311. The next prime is 215430329. The reversal of 215430323 is 323034512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215430323 - 2¹⁰ = 215429299 is a prime.

It is not a weakly prime, because it can be changed into another prime (215430329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107715161 + 107715162.

It is an arithmetic number, because the mean of its divisors is an integer number (107715162).

Almost surely, 2^215430323 is an apocalyptic number.

215430323 is a deficient number, since it is larger than the sum of its proper divisors (1).

215430323 is an equidigital number, since it uses as much as digits as its factorization.

215430323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 215430323 is about 14677.5448560037. The cubic root of 215430323 is about 599.4720568927.

Adding to 215430323 its reverse (323034512), we get a palindrome (538464835).

The spelling of 215430323 in words is "two hundred fifteen million, four hundred thirty thousand, three hundred twenty-three".