231434250 has 128 divisors (see below), whose sum is σ = 617760000. Its totient is φ = 57542400.

The previous prime is 231434233. The next prime is 231434263. The reversal of 231434250 is 52434132.

It is a self number, because there is not a number n which added to its sum of digits gives 231434250.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1553176 + ... + 1553324.

It is an arithmetic number, because the mean of its divisors is an integer number (4826250).

Almost surely, 2^231434250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231434250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308880000).

231434250 is an abundant number, since it is smaller than the sum of its proper divisors (386325750).

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

231434250 is a wasteful number, since it uses less digits than its factorization.

231434250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 231434250 is about 15212.9632221997. The cubic root of 231434250 is about 613.9634863891.

Adding to 231434250 its reverse (52434132), we get a palindrome (283868382).

The spelling of 231434250 in words is "two hundred thirty-one million, four hundred thirty-four thousand, two hundred fifty".