231115347 has 6 divisors (see below), whose sum is σ = 333833292. Its totient is φ = 154076892.

The previous prime is 231115321. The next prime is 231115387. The reversal of 231115347 is 743511132.

231115347 is a `hidden beast` number, since 2 + 311 + 1 + 5 + 347 = 666.

231115347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231115347 - 2⁷ = 231115219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231115347.

It is not an unprimeable number, because it can be changed into a prime (231115307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12839733 + ... + 12839750.

It is an arithmetic number, because the mean of its divisors is an integer number (55638882).

Almost surely, 2^231115347 is an apocalyptic number.

231115347 is a deficient number, since it is larger than the sum of its proper divisors (102717945).

231115347 is a wasteful number, since it uses less digits than its factorization.

231115347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25679489 (or 25679486 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 231115347 is about 15202.4783176954. The cubic root of 231115347 is about 613.6813547139.

Adding to 231115347 its reverse (743511132), we get a palindrome (974626479).

The spelling of 231115347 in words is "two hundred thirty-one million, one hundred fifteen thousand, three hundred forty-seven".