1113323021 has 8 divisors (see below), whose sum is σ = 1160785920. Its totient is φ = 1066465008.

The previous prime is 1113322999. The next prime is 1113323023. The reversal of 1113323021 is 1203233111.

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 1113323021 - 2⁶ = 1113322957 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 (1113323023) 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, 147461 + ... + 154826.

It is an arithmetic number, because the mean of its divisors is an integer number (145098240).

Almost surely, 2^1113323021 is an apocalyptic number.

It is an amenable number.

1113323021 is a deficient number, since it is larger than the sum of its proper divisors (47462899).

1113323021 is a wasteful number, since it uses less digits than its factorization.

1113323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302443.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1113323021 is about 33366.4954857414. The cubic root of 1113323021 is about 1036.4310049174.

Adding to 1113323021 its reverse (1203233111), we get a palindrome (2316556132).

The spelling of 1113323021 in words is "one billion, one hundred thirteen million, three hundred twenty-three thousand, twenty-one".