215023131165 has 8 divisors (see below), whose sum is σ = 344037009888. Its totient is φ = 114679003280.

The previous prime is 215023131161. The next prime is 215023131179. The reversal of 215023131165 is 561131320512.

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

It is not a de Polignac number, because 215023131165 - 2² = 215023131161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215023131161) 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, 7167437691 + ... + 7167437720.

It is an arithmetic number, because the mean of its divisors is an integer number (43004626236).

Almost surely, 2^215023131165 is an apocalyptic number.

It is an amenable number.

215023131165 is a deficient number, since it is larger than the sum of its proper divisors (129013878723).

215023131165 is a wasteful number, since it uses less digits than its factorization.

215023131165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14334875419.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 215023131165 its reverse (561131320512), we get a palindrome (776154451677).

The spelling of 215023131165 in words is "two hundred fifteen billion, twenty-three million, one hundred thirty-one thousand, one hundred sixty-five".