215523023 has 8 divisors (see below), whose sum is σ = 229417200. Its totient is φ = 201883968.

The previous prime is 215523017. The next prime is 215523073. The reversal of 215523023 is 320325512.

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

It is not a de Polignac number, because 215523023 - 2⁸ = 215522767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215523023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215523073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62036 + ... + 65417.

It is an arithmetic number, because the mean of its divisors is an integer number (28677150).

Almost surely, 2^215523023 is an apocalyptic number.

215523023 is a deficient number, since it is larger than the sum of its proper divisors (13894177).

215523023 is a wasteful number, since it uses less digits than its factorization.

215523023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127561.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 215523023 is about 14680.7024014521. The cubic root of 215523023 is about 599.5580291458.

Adding to 215523023 its reverse (320325512), we get a palindrome (535848535).

The spelling of 215523023 in words is "two hundred fifteen million, five hundred twenty-three thousand, twenty-three".