231146412 has 96 divisors (see below), whose sum is σ = 647721984. Its totient is φ = 62726400.

The previous prime is 231146411. The next prime is 231146453. The reversal of 231146412 is 214641132.

231146412 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (231146411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349362 + ... + 350022.

It is an arithmetic number, because the mean of its divisors is an integer number (6747104).

Almost surely, 2^231146412 is an apocalyptic number.

It is a pronic number, being equal to 15203×15204.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231146412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323860992).

231146412 is an abundant number, since it is smaller than the sum of its proper divisors (416575572).

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

231146412 is a wasteful number, since it uses less digits than its factorization.

231146412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 877 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 231146412 is about 15203.4999917782. The cubic root of 231146412 is about 613.7088491483.

Adding to 231146412 its reverse (214641132), we get a palindrome (445787544).

The spelling of 231146412 in words is "two hundred thirty-one million, one hundred forty-six thousand, four hundred twelve".