231345245 has 16 divisors (see below), whose sum is σ = 282839040. Its totient is φ = 181608000.

The previous prime is 231345241. The next prime is 231345271. The reversal of 231345245 is 542543132.

It is a happy number.

231345245 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 231345245 - 2² = 231345241 is a prime.

It is a super-2 number, since 2×231345245² = 107041244768220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231345241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200420 + ... + 201570.

It is an arithmetic number, because the mean of its divisors is an integer number (17677440).

Almost surely, 2^231345245 is an apocalyptic number.

It is an amenable number.

231345245 is a deficient number, since it is larger than the sum of its proper divisors (51493795).

231345245 is a wasteful number, since it uses less digits than its factorization.

231345245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876.

The product of its digits is 14400, while the sum is 29.

The square root of 231345245 is about 15210.0376396641. The cubic root of 231345245 is about 613.8847702572.

Adding to 231345245 its reverse (542543132), we get a palindrome (773888377).

The spelling of 231345245 in words is "two hundred thirty-one million, three hundred forty-five thousand, two hundred forty-five".