231515522220214 has 16 divisors (see below), whose sum is σ = 364953444208848. Its totient is φ = 110009889878112.

The previous prime is 231515522220209. The next prime is 231515522220223. The reversal of 231515522220214 is 412022225515132.

231515522220214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent 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, 36378928657 + ... + 36378935020.

It is an arithmetic number, because the mean of its divisors is an integer number (22809590263053).

Almost surely, 2^{231515522220214} is an apocalyptic number.

231515522220214 is a deficient number, since it is larger than the sum of its proper divisors (133437921988634).

231515522220214 is a wasteful number, since it uses less digits than its factorization.

231515522220214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72757863759.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 231515522220214 its reverse (412022225515132), we get a palindrome (643537747735346).

The spelling of 231515522220214 in words is "two hundred thirty-one trillion, five hundred fifteen billion, five hundred twenty-two million, two hundred twenty thousand, two hundred fourteen".