231516055 has 8 divisors (see below), whose sum is σ = 277916544. Its totient is φ = 185148000.

The previous prime is 231516017. The next prime is 231516079. The reversal of 231516055 is 550615132.

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

It is a de Polignac number, because none of the positive numbers 2^k-231516055 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12250 + ... + 24760.

It is an arithmetic number, because the mean of its divisors is an integer number (34739568).

Almost surely, 2^231516055 is an apocalyptic number.

231516055 is a deficient number, since it is larger than the sum of its proper divisors (46400489).

231516055 is a wasteful number, since it uses less digits than its factorization.

231516055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16217.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 231516055 is about 15215.6516455918. The cubic root of 231516055 is about 614.0358170351.

The spelling of 231516055 in words is "two hundred thirty-one million, five hundred sixteen thousand, fifty-five".