231430146 has 32 divisors (see below), whose sum is σ = 515885760. Its totient is φ = 68783616.

The previous prime is 231430141. The next prime is 231430169. The reversal of 231430146 is 641034132.

It is not an unprimeable number, because it can be changed into a prime (231430141) 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, 57771 + ... + 61646.

It is an arithmetic number, because the mean of its divisors is an integer number (16121430).

Almost surely, 2^231430146 is an apocalyptic number.

231430146 is an abundant number, since it is smaller than the sum of its proper divisors (284455614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231430146 is a wasteful number, since it uses less digits than its factorization.

231430146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119458.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 231430146 is about 15212.8283366375. The cubic root of 231430146 is about 613.9598572503.

Adding to 231430146 its reverse (641034132), we get a palindrome (872464278).

The spelling of 231430146 in words is "two hundred thirty-one million, four hundred thirty thousand, one hundred forty-six".