201023310232015 has 4 divisors (see below), whose sum is σ = 241227972278424. Its totient is φ = 160818648185608.

The previous prime is 201023310232007. The next prime is 201023310232109. The reversal of 201023310232015 is 510232013320102.

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

It is a cyclic number.

It is not a de Polignac number, because 201023310232015 - 2³ = 201023310232007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20102331023197 + ... + 20102331023206.

It is an arithmetic number, because the mean of its divisors is an integer number (60306993069606).

Almost surely, 2^{201023310232015} is an apocalyptic number.

201023310232015 is a deficient number, since it is larger than the sum of its proper divisors (40204662046409).

201023310232015 is an equidigital number, since it uses as much as digits as its factorization.

201023310232015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40204662046408.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 201023310232015 its reverse (510232013320102), we get a palindrome (711255323552117).

The spelling of 201023310232015 in words is "two hundred one trillion, twenty-three billion, three hundred ten million, two hundred thirty-two thousand, fifteen".