331422500 has 60 divisors (see below), whose sum is σ = 741850032. Its totient is φ = 129444000.

The previous prime is 331422499. The next prime is 331422503. The reversal of 331422500 is 5224133.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (331422503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 105959 + ... + 109041.

Almost surely, 2^331422500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331422500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370925016).

331422500 is an abundant number, since it is smaller than the sum of its proper divisors (410427532).

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

331422500 is a wasteful number, since it uses less digits than its factorization.

331422500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150 (or 3133 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 331422500 is about 18205.0130458618. The cubic root of 331422500 is about 692.0338367630.

Adding to 331422500 its reverse (5224133), we get a palindrome (336646633).

The spelling of 331422500 in words is "three hundred thirty-one million, four hundred twenty-two thousand, five hundred".