1113961397213 has 4 divisors (see below), whose sum is σ = 1273098739680. Its totient is φ = 954824054748.

The previous prime is 1113961397179. The next prime is 1113961397231. The reversal of 1113961397213 is 3127931693111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1113961397213 - 2³⁰ = 1112887655389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113961397243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79568671223 + ... + 79568671236.

It is an arithmetic number, because the mean of its divisors is an integer number (318274684920).

Almost surely, 2^{1113961397213} is an apocalyptic number.

It is an amenable number.

1113961397213 is a deficient number, since it is larger than the sum of its proper divisors (159137342467).

1113961397213 is an equidigital number, since it uses as much as digits as its factorization.

1113961397213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159137342466.

The product of its digits is 183708, while the sum is 47.

The spelling of 1113961397213 in words is "one trillion, one hundred thirteen billion, nine hundred sixty-one million, three hundred ninety-seven thousand, two hundred thirteen".