231015346 has 16 divisors (see below), whose sum is σ = 376825176. Its totient is φ = 105774336.

The previous prime is 231015341. The next prime is 231015347. The reversal of 231015346 is 643510132.

231015346 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 221682321 + 9333025 = 14889^2 + 3055^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231015346.

It is not an unprimeable number, because it can be changed into a prime (231015341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90561 + ... + 93076.

Almost surely, 2^231015346 is an apocalyptic number.

231015346 is a deficient number, since it is larger than the sum of its proper divisors (145809830).

231015346 is a wasteful number, since it uses less digits than its factorization.

231015346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183693.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 231015346 is about 15199.1889915219. The cubic root of 231015346 is about 613.5928309483.

Adding to 231015346 its reverse (643510132), we get a palindrome (874525478).

It can be divided in two parts, 231015 and 346, that added together give a square (231361 = 481²).

The spelling of 231015346 in words is "two hundred thirty-one million, fifteen thousand, three hundred forty-six".