215319430 has 16 divisors (see below), whose sum is σ = 392246064. Its totient is φ = 85089760.

The previous prime is 215319427. The next prime is 215319431. The reversal of 215319430 is 34913512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215319431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128881 + ... + 130540.

It is an arithmetic number, because the mean of its divisors is an integer number (24515379).

Almost surely, 2^215319430 is an apocalyptic number.

215319430 is a deficient number, since it is larger than the sum of its proper divisors (176926634).

215319430 is a wasteful number, since it uses less digits than its factorization.

215319430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259511.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 215319430 is about 14673.7667284171. The cubic root of 215319430 is about 599.3691796011.

The spelling of 215319430 in words is "two hundred fifteen million, three hundred nineteen thousand, four hundred thirty".