231503203115 has 16 divisors (see below), whose sum is σ = 283403136288. Its totient is φ = 181502021376.

The previous prime is 231503203079. The next prime is 231503203123. The reversal of 231503203115 is 511302305132.

It is a cyclic number.

It is not a de Polignac number, because 231503203115 - 2¹⁸ = 231502940971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1962617 + ... + 2077226.

It is an arithmetic number, because the mean of its divisors is an integer number (17712696018).

Almost surely, 2^231503203115 is an apocalyptic number.

231503203115 is a deficient number, since it is larger than the sum of its proper divisors (51899933173).

231503203115 is a wasteful number, since it uses less digits than its factorization.

231503203115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040078.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 231503203115 its reverse (511302305132), we get a palindrome (742805508247).

The spelling of 231503203115 in words is "two hundred thirty-one billion, five hundred three million, two hundred three thousand, one hundred fifteen".