231305115 has 8 divisors (see below), whose sum is σ = 370088208. Its totient is φ = 123362720.

The previous prime is 231305057. The next prime is 231305119. The reversal of 231305115 is 511503132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231305115 - 2¹¹ = 231303067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231305091 and 231305100.

It is not an unprimeable number, because it can be changed into a prime (231305119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7710156 + ... + 7710185.

It is an arithmetic number, because the mean of its divisors is an integer number (46261026).

Almost surely, 2^231305115 is an apocalyptic number.

231305115 is a deficient number, since it is larger than the sum of its proper divisors (138783093).

231305115 is a wasteful number, since it uses less digits than its factorization.

231305115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15420349.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 231305115 is about 15208.7183878195. The cubic root of 231305115 is about 613.8492726320.

Adding to 231305115 its reverse (511503132), we get a palindrome (742808247).

The spelling of 231305115 in words is "two hundred thirty-one million, three hundred five thousand, one hundred fifteen".