231232115 has 4 divisors (see below), whose sum is σ = 277478544. Its totient is φ = 184985688.

The previous prime is 231232097. The next prime is 231232117. The reversal of 231232115 is 511232132.

231232115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231232115 - 2⁸ = 231231859 is a prime.

It is a super-3 number, since 3×231232115³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231232117) 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, 23123207 + ... + 23123216.

It is an arithmetic number, because the mean of its divisors is an integer number (69369636).

Almost surely, 2^231232115 is an apocalyptic number.

231232115 is a deficient number, since it is larger than the sum of its proper divisors (46246429).

231232115 is an equidigital number, since it uses as much as digits as its factorization.

231232115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46246428.

The product of its digits is 360, while the sum is 20.

The square root of 231232115 is about 15206.3182591974. The cubic root of 231232115 is about 613.7846888003.

Adding to 231232115 its reverse (511232132), we get a palindrome (742464247).

The spelling of 231232115 in words is "two hundred thirty-one million, two hundred thirty-two thousand, one hundred fifteen".