1113981035209 has 9 divisors (see below), whose sum is σ = 1295864084397. Its totient is φ = 954834554604.

The previous prime is 1113981035197. The next prime is 1113981035221. The reversal of 1113981035209 is 9025301893111.

The square root of 1113981035209 is 1055453.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (1113981035197) and next prime (1113981035221).

It is a de Polignac number, because none of the positive numbers 2^k-1113981035209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113981035809) 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 8 ways as a sum of consecutive naturals, for example, 7312782 + ... + 7463560.

Almost surely, 2^{1113981035209} is an apocalyptic number.

1113981035209 is the 1055453-rd square number.

1113981035209 is the 527727-th centered octagonal number.

It is an amenable number.

1113981035209 is a deficient number, since it is larger than the sum of its proper divisors (181883049188).

1113981035209 is an frugal number, since it uses more digits than its factorization.

1113981035209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301572 (or 150786 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 1113981035209 in words is "one trillion, one hundred thirteen billion, nine hundred eighty-one million, thirty-five thousand, two hundred nine".