1113582721 has 2 divisors, whose sum is σ = 1113582722. Its totient is φ = 1113582720.

The previous prime is 1113582719. The next prime is 1113582731. The reversal of 1113582721 is 1272853111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 654080625 + 459502096 = 25575^2 + 21436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113582721 - 2¹ = 1113582719 is a prime.

Together with 1113582719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1113582731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556791360 + 556791361.

It is an arithmetic number, because the mean of its divisors is an integer number (556791361).

Almost surely, 2^1113582721 is an apocalyptic number.

It is an amenable number.

1113582721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113582721 is an equidigital number, since it uses as much as digits as its factorization.

1113582721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 31.

The square root of 1113582721 is about 33370.3868871789. The cubic root of 1113582721 is about 1036.5115865638.

The spelling of 1113582721 in words is "one billion, one hundred thirteen million, five hundred eighty-two thousand, seven hundred twenty-one".