1113031021 has 8 divisors (see below), whose sum is σ = 1179083520. Its totient is φ = 1047043008.

The previous prime is 1113030979. The next prime is 1113031033. The reversal of 1113031021 is 1201303111.

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

It is a cyclic number.

It is not a de Polignac number, because 1113031021 - 2⁹ = 1113030509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113030992 and 1113031010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113031061) 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, 22020 + ... + 52066.

It is an arithmetic number, because the mean of its divisors is an integer number (147385440).

Almost surely, 2^1113031021 is an apocalyptic number.

It is an amenable number.

1113031021 is a deficient number, since it is larger than the sum of its proper divisors (66052499).

1113031021 is a wasteful number, since it uses less digits than its factorization.

1113031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32243.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1113031021 is about 33362.1195519709. The cubic root of 1113031021 is about 1036.3403860195.

Adding to 1113031021 its reverse (1201303111), we get a palindrome (2314334132).

The spelling of 1113031021 in words is "one billion, one hundred thirteen million, thirty-one thousand, twenty-one".