1331172216 has 96 divisors (see below), whose sum is σ = 4164404400. Its totient is φ = 379653120.

The previous prime is 1331172179. The next prime is 1331172247. The reversal of 1331172216 is 6122711331.

It is a self number, because there is not a number n which added to its sum of digits gives 1331172216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35971 + ... + 62898.

Almost surely, 2^1331172216 is an apocalyptic number.

It is an amenable number.

1331172216 is an abundant number, since it is smaller than the sum of its proper divisors (2833232184).

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

1331172216 is a wasteful number, since it uses less digits than its factorization.

1331172216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98909 (or 98902 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1331172216 is about 36485.2328483731. The cubic root of 1331172216 is about 1100.0474403782.

Adding to 1331172216 its reverse (6122711331), we get a palindrome (7453883547).

The spelling of 1331172216 in words is "one billion, three hundred thirty-one million, one hundred seventy-two thousand, two hundred sixteen".