1113455281 has 2 divisors, whose sum is σ = 1113455282. Its totient is φ = 1113455280.

The previous prime is 1113455267. The next prime is 1113455381. The reversal of 1113455281 is 1825543111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 991242256 + 122213025 = 31484^2 + 11055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113455281 - 2⁷ = 1113455153 is a prime.

It is a super-2 number, since 2×1113455281² = 2479565325573577922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1113455251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556727640 + 556727641.

It is an arithmetic number, because the mean of its divisors is an integer number (556727641).

Almost surely, 2^1113455281 is an apocalyptic number.

It is an amenable number.

1113455281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113455281 is an equidigital number, since it uses as much as digits as its factorization.

1113455281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 31.

The square root of 1113455281 is about 33368.4773551326. The cubic root of 1113455281 is about 1036.4720450990.

Adding to 1113455281 its reverse (1825543111), we get a palindrome (2938998392).

The spelling of 1113455281 in words is "one billion, one hundred thirteen million, four hundred fifty-five thousand, two hundred eighty-one".