1113231533 has 4 divisors (see below), whose sum is σ = 1161632928. Its totient is φ = 1064830140.

The previous prime is 1113231523. The next prime is 1113231541. The reversal of 1113231533 is 3351323111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3351323111 = 6947 ⋅482413.

It is a cyclic number.

It is not a de Polignac number, because 1113231533 - 2⁸ = 1113231277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 48401371 = 1113231533 / (1 + 1 + 1 + 3 + 2 + 3 + 1 + 5 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113231499 and 1113231508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113231523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24200663 + ... + 24200708.

It is an arithmetic number, because the mean of its divisors is an integer number (290408232).

Almost surely, 2^1113231533 is an apocalyptic number.

It is an amenable number.

1113231533 is a deficient number, since it is larger than the sum of its proper divisors (48401395).

1113231533 is an equidigital number, since it uses as much as digits as its factorization.

1113231533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48401394.

The product of its digits is 810, while the sum is 23.

The square root of 1113231533 is about 33365.1245014911. The cubic root of 1113231533 is about 1036.4026143559.

Adding to 1113231533 its reverse (3351323111), we get a palindrome (4464554644).

The spelling of 1113231533 in words is "one billion, one hundred thirteen million, two hundred thirty-one thousand, five hundred thirty-three".