1013012321 has 4 divisors (see below), whose sum is σ = 1013076372. Its totient is φ = 1012948272.

The previous prime is 1013012317. The next prime is 1013012333. The reversal of 1013012321 is 1232103101.

1013012321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 296700625 + 716311696 = 17225^2 + 26764^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013012321 - 2² = 1013012317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013012296 and 1013012305.

It is not an unprimeable number, because it can be changed into a prime (1013012921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10691 + ... + 46263.

It is an arithmetic number, because the mean of its divisors is an integer number (253269093).

Almost surely, 2^1013012321 is an apocalyptic number.

It is an amenable number.

1013012321 is a deficient number, since it is larger than the sum of its proper divisors (64051).

1013012321 is an equidigital number, since it uses as much as digits as its factorization.

1013012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64050.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1013012321 is about 31827.8544831410. The cubic root of 1013012321 is about 1004.3187617793.

Adding to 1013012321 its reverse (1232103101), we get a palindrome (2245115422).

The spelling of 1013012321 in words is "one billion, thirteen million, twelve thousand, three hundred twenty-one".