1013535021 has 8 divisors (see below), whose sum is σ = 1358846944. Its totient is φ = 671956560.

The previous prime is 1013535001. The next prime is 1013535037. The reversal of 1013535021 is 1205353101.

1013535021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1013535021 - 2⁶ = 1013534957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013535001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932731 + ... + 933816.

It is an arithmetic number, because the mean of its divisors is an integer number (169855868).

Almost surely, 2^1013535021 is an apocalyptic number.

It is an amenable number.

1013535021 is a deficient number, since it is larger than the sum of its proper divisors (345311923).

1013535021 is a wasteful number, since it uses less digits than its factorization.

1013535021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866731.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1013535021 is about 31836.0647850830. The cubic root of 1013535021 is about 1004.4914701599.

Adding to 1013535021 its reverse (1205353101), we get a palindrome (2218888122).

The spelling of 1013535021 in words is "one billion, thirteen million, five hundred thirty-five thousand, twenty-one".