231115077503 has 4 divisors (see below), whose sum is σ = 244710082080. Its totient is φ = 217520072928.

The previous prime is 231115077497. The next prime is 231115077521. The reversal of 231115077503 is 305770511132.

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 231115077503 - 2¹⁴ = 231115061119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231115077703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6797502263 + ... + 6797502296.

It is an arithmetic number, because the mean of its divisors is an integer number (61177520520).

Almost surely, 2^231115077503 is an apocalyptic number.

231115077503 is a deficient number, since it is larger than the sum of its proper divisors (13595004577).

231115077503 is a wasteful number, since it uses less digits than its factorization.

231115077503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13595004576.

The product of its (nonzero) digits is 22050, while the sum is 35.

Adding to 231115077503 its reverse (305770511132), we get a palindrome (536885588635).

The spelling of 231115077503 in words is "two hundred thirty-one billion, one hundred fifteen million, seventy-seven thousand, five hundred three".