1331422200 has 144 divisors (see below), whose sum is σ = 4522143600. Its totient is φ = 351014400.

The previous prime is 1331422189. The next prime is 1331422217. The reversal of 1331422200 is 22241331.

1331422200 is a `hidden beast` number, since 13 + 31 + 422 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 156045 + ... + 164355.

It is an arithmetic number, because the mean of its divisors is an integer number (31403775).

Almost surely, 2^1331422200 is an apocalyptic number.

1331422200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331422200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261071800).

1331422200 is an abundant number, since it is smaller than the sum of its proper divisors (3190721400).

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

1331422200 is a wasteful number, since it uses less digits than its factorization.

1331422200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8422 (or 8410 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1331422200 is about 36488.6585119267. The cubic root of 1331422200 is about 1100.1162962442.

Adding to 1331422200 its reverse (22241331), we get a palindrome (1353663531).

The spelling of 1331422200 in words is "one billion, three hundred thirty-one million, four hundred twenty-two thousand, two hundred".