1331342502 has 64 divisors (see below), whose sum is σ = 3211461120. Its totient is φ = 359437824.

The previous prime is 1331342491. The next prime is 1331342533. The reversal of 1331342502 is 2052431331.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 343608 + ... + 347460.

It is an arithmetic number, because the mean of its divisors is an integer number (50179080).

Almost surely, 2^1331342502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331342502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1605730560).

1331342502 is an abundant number, since it is smaller than the sum of its proper divisors (1880118618).

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

1331342502 is a wasteful number, since it uses less digits than its factorization.

1331342502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1331342502 is about 36487.5664028173. The cubic root of 1331342502 is about 1100.0943450760.

Adding to 1331342502 its reverse (2052431331), we get a palindrome (3383773833).

The spelling of 1331342502 in words is "one billion, three hundred thirty-one million, three hundred forty-two thousand, five hundred two".