1113343421 has 2 divisors, whose sum is σ = 1113343422. Its totient is φ = 1113343420.

The previous prime is 1113343417. The next prime is 1113343423. The reversal of 1113343421 is 1243433111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 899160196 + 214183225 = 29986^2 + 14635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113343421 - 2² = 1113343417 is a prime.

Together with 1113343423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113343423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556671710 + 556671711.

It is an arithmetic number, because the mean of its divisors is an integer number (556671711).

Almost surely, 2^1113343421 is an apocalyptic number.

It is an amenable number.

1113343421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113343421 is an equidigital number, since it uses as much as digits as its factorization.

1113343421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 1113343421 is about 33366.8011802150. The cubic root of 1113343421 is about 1036.4373352346.

Adding to 1113343421 its reverse (1243433111), we get a palindrome (2356776532).

The spelling of 1113343421 in words is "one billion, one hundred thirteen million, three hundred forty-three thousand, four hundred twenty-one".