1113323421 has 16 divisors (see below), whose sum is σ = 1796287104. Its totient is φ = 598761984.

The previous prime is 1113323413. The next prime is 1113323437. The reversal of 1113323421 is 1243233111.

It is not a de Polignac number, because 1113323421 - 2³ = 1113323413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113323401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1558920 + ... + 1559633.

It is an arithmetic number, because the mean of its divisors is an integer number (112267944).

Almost surely, 2^1113323421 is an apocalyptic number.

It is an amenable number.

1113323421 is a deficient number, since it is larger than the sum of its proper divisors (682963683).

1113323421 is a wasteful number, since it uses less digits than its factorization.

1113323421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118580.

The product of its digits is 432, while the sum is 21.

The square root of 1113323421 is about 33366.5014797776. The cubic root of 1113323421 is about 1036.4311290420.

Adding to 1113323421 its reverse (1243233111), we get a palindrome (2356556532).

The spelling of 1113323421 in words is "one billion, one hundred thirteen million, three hundred twenty-three thousand, four hundred twenty-one".