1331313502 has 8 divisors (see below), whose sum is σ = 2050942536. Its totient is φ = 647665992.

The previous prime is 1331313499. The next prime is 1331313509. The reversal of 1331313502 is 2053131331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331313509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8995288 + ... + 8995435.

It is an arithmetic number, because the mean of its divisors is an integer number (256367817).

Almost surely, 2^1331313502 is an apocalyptic number.

1331313502 is a deficient number, since it is larger than the sum of its proper divisors (719629034).

1331313502 is a wasteful number, since it uses less digits than its factorization.

1331313502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17990762.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 1331313502 is about 36487.1690050078. The cubic root of 1331313502 is about 1100.0863574075.

Adding to 1331313502 its reverse (2053131331), we get a palindrome (3384444833).

The spelling of 1331313502 in words is "one billion, three hundred thirty-one million, three hundred thirteen thousand, five hundred two".