1321033113 has 12 divisors (see below), whose sum is σ = 1908661248. Its totient is φ = 880456920.

The previous prime is 1321033111. The next prime is 1321033117. The reversal of 1321033113 is 3113301231.

It is a happy number.

1321033113 is a `hidden beast` number, since 1 + 321 + 0 + 331 + 13 = 666.

It is not a de Polignac number, because 1321033113 - 2¹ = 1321033111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321033111) 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 11 ways as a sum of consecutive naturals, for example, 21256 + ... + 55622.

It is an arithmetic number, because the mean of its divisors is an integer number (159055104).

Almost surely, 2^1321033113 is an apocalyptic number.

It is an amenable number.

1321033113 is a deficient number, since it is larger than the sum of its proper divisors (587628135).

1321033113 is a wasteful number, since it uses less digits than its factorization.

1321033113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38644 (or 38641 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1321033113 is about 36346.0192180657. The cubic root of 1321033113 is about 1097.2474189359.

Adding to 1321033113 its reverse (3113301231), we get a palindrome (4434334344).

The spelling of 1321033113 in words is "one billion, three hundred twenty-one million, thirty-three thousand, one hundred thirteen".