133331250 has 96 divisors (see below), whose sum is σ = 359601984. Its totient is φ = 32760000.

The previous prime is 133331201. The next prime is 133331251. The reversal of 133331250 is 52133331.

133331250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (133331251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 243477 + ... + 244023.

It is an arithmetic number, because the mean of its divisors is an integer number (3745854).

Almost surely, 2^133331250 is an apocalyptic number.

133331250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133331250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179800992).

133331250 is an abundant number, since it is smaller than the sum of its proper divisors (226270734).

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

133331250 is an equidigital number, since it uses as much as digits as its factorization.

133331250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 133331250 is about 11546.9151724606. The cubic root of 133331250 is about 510.8702941185.

Adding to 133331250 its reverse (52133331), we get a palindrome (185464581).

The spelling of 133331250 in words is "one hundred thirty-three million, three hundred thirty-one thousand, two hundred fifty".