1321502013 has 32 divisors (see below), whose sum is σ = 2133828480. Its totient is φ = 803416320.

The previous prime is 1321502011. The next prime is 1321502033. The reversal of 1321502013 is 3102051231.

It is not a de Polignac number, because 1321502013 - 2¹ = 1321502011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321502011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6453 + ... + 51813.

It is an arithmetic number, because the mean of its divisors is an integer number (66682140).

Almost surely, 2^1321502013 is an apocalyptic number.

1321502013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1321502013 is a deficient number, since it is larger than the sum of its proper divisors (812326467).

1321502013 is a wasteful number, since it uses less digits than its factorization.

1321502013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45466 (or 45460 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1321502013 is about 36352.4691458503. The cubic root of 1321502013 is about 1097.3772260411.

Adding to 1321502013 its reverse (3102051231), we get a palindrome (4423553244).

The spelling of 1321502013 in words is "one billion, three hundred twenty-one million, five hundred two thousand, thirteen".