215314073 has 4 divisors (see below), whose sum is σ = 231876708. Its totient is φ = 198751440.

The previous prime is 215313997. The next prime is 215314087. The reversal of 215314073 is 370413512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90478144 + 124835929 = 9512^2 + 11173^2 .

It is a cyclic number.

It is not a de Polignac number, because 215314073 - 2²⁰ = 214265497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215314093) 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, 8281298 + ... + 8281323.

It is an arithmetic number, because the mean of its divisors is an integer number (57969177).

Almost surely, 2^215314073 is an apocalyptic number.

It is an amenable number.

215314073 is a deficient number, since it is larger than the sum of its proper divisors (16562635).

215314073 is a wasteful number, since it uses less digits than its factorization.

215314073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16562634.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 215314073 is about 14673.5841906468. The cubic root of 215314073 is about 599.3642089282.

Adding to 215314073 its reverse (370413512), we get a palindrome (585727585).

The spelling of 215314073 in words is "two hundred fifteen million, three hundred fourteen thousand, seventy-three".