1331514540 has 36 divisors (see below), whose sum is σ = 4038927984. Its totient is φ = 355070496.

The previous prime is 1331514521. The next prime is 1331514553. The reversal of 1331514540 is 454151331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3698472 + ... + 3698831.

It is an arithmetic number, because the mean of its divisors is an integer number (112192444).

Almost surely, 2^1331514540 is an apocalyptic number.

1331514540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331514540 is an abundant number, since it is smaller than the sum of its proper divisors (2707413444).

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

1331514540 is a wasteful number, since it uses less digits than its factorization.

1331514540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7397318 (or 7397313 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1331514540 is about 36489.9238146642. The cubic root of 1331514540 is about 1100.1417282949.

Adding to 1331514540 its reverse (454151331), we get a palindrome (1785665871).

The spelling of 1331514540 in words is "one billion, three hundred thirty-one million, five hundred fourteen thousand, five hundred forty".