231551512542115 has 8 divisors (see below), whose sum is σ = 277862097166848. Its totient is φ = 185241021956160.

The previous prime is 231551512542109. The next prime is 231551512542187. The reversal of 231551512542115 is 511245215155132.

It is a happy number.

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

It is not a de Polignac number, because 231551512542115 - 2⁵ = 231551512542083 is a prime.

It is a super-2 number, since 2×231551512542115² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17974146 + ... + 28038775.

It is an arithmetic number, because the mean of its divisors is an integer number (34732762145856).

Almost surely, 2^{231551512542115} is an apocalyptic number.

231551512542115 is a deficient number, since it is larger than the sum of its proper divisors (46310584624733).

231551512542115 is a wasteful number, since it uses less digits than its factorization.

231551512542115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47019389.

The product of its digits is 300000, while the sum is 43.

Adding to 231551512542115 its reverse (511245215155132), we get a palindrome (742796727697247).

The spelling of 231551512542115 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, five hundred twelve million, five hundred forty-two thousand, one hundred fifteen".