231331430 has 48 divisors (see below), whose sum is σ = 468955872. Its totient is φ = 82051200.

The previous prime is 231331423. The next prime is 231331439. The reversal of 231331430 is 34133132.

231331430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231331439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47279 + ... + 51941.

It is an arithmetic number, because the mean of its divisors is an integer number (9769914).

Almost surely, 2^231331430 is an apocalyptic number.

231331430 is an abundant number, since it is smaller than the sum of its proper divisors (237624442).

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

231331430 is a wasteful number, since it uses less digits than its factorization.

231331430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733 (or 4722 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 231331430 is about 15209.5834919961. The cubic root of 231331430 is about 613.8725504442.

Adding to 231331430 its reverse (34133132), we get a palindrome (265464562).

The spelling of 231331430 in words is "two hundred thirty-one million, three hundred thirty-one thousand, four hundred thirty".