1113421231 has 16 divisors (see below), whose sum is σ = 1234404864. Its totient is φ = 997776864.

The previous prime is 1113421217. The next prime is 1113421241. The reversal of 1113421231 is 1321243111.

It is a cyclic number.

It is not a de Polignac number, because 1113421231 - 2¹³ = 1113413039 is a prime.

It is a super-2 number, since 2×1113421231² = 2479413675283110722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113421199 and 1113421208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113421241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87390 + ... + 99316.

It is an arithmetic number, because the mean of its divisors is an integer number (77150304).

Almost surely, 2^1113421231 is an apocalyptic number.

1113421231 is a deficient number, since it is larger than the sum of its proper divisors (120983633).

1113421231 is a wasteful number, since it uses less digits than its factorization.

1113421231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12150.

The product of its digits is 144, while the sum is 19.

The square root of 1113421231 is about 33367.9671391591. The cubic root of 1113421231 is about 1036.4614797195.

Adding to 1113421231 its reverse (1321243111), we get a palindrome (2434664342).

The spelling of 1113421231 in words is "one billion, one hundred thirteen million, four hundred twenty-one thousand, two hundred thirty-one".