215383 has 8 divisors (see below), whose sum is σ = 254880. Its totient is φ = 178080.

The previous prime is 215381. The next prime is 215389. The reversal of 215383 is 383512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215383 - 2¹ = 215381 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 (215381) 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, 328 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (31860).

2²¹⁵³⁸³ is an apocalyptic number.

215383 is a deficient number, since it is larger than the sum of its proper divisors (39497).

215383 is a wasteful number, since it uses less digits than its factorization.

215383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097.

The product of its digits is 720, while the sum is 22.

The square root of 215383 is about 464.0937405309. The cubic root of 215383 is about 59.9428158873.

Adding to 215383 its reverse (383512), we get a palindrome (598895).

The spelling of 215383 in words is "two hundred fifteen thousand, three hundred eighty-three".