1331252316 has 72 divisors (see below), whose sum is σ = 3430627200. Its totient is φ = 435196800.

The previous prime is 1331252311. The next prime is 1331252317. The reversal of 1331252316 is 6132521331.

1331252316 is a `hidden beast` number, since 133 + 1 + 2 + 523 + 1 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1331252316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331252311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394645 + ... + 398003.

It is an arithmetic number, because the mean of its divisors is an integer number (47647600).

Almost surely, 2^1331252316 is an apocalyptic number.

It is an amenable number.

1331252316 is an abundant number, since it is smaller than the sum of its proper divisors (2099374884).

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

1331252316 is a wasteful number, since it uses less digits than its factorization.

1331252316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579 (or 3574 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 1331252316 is about 36486.3305362433. The cubic root of 1331252316 is about 1100.0695041482.

Adding to 1331252316 its reverse (6132521331), we get a palindrome (7463773647).

The spelling of 1331252316 in words is "one billion, three hundred thirty-one million, two hundred fifty-two thousand, three hundred sixteen".