13111963 has 4 divisors (see below), whose sum is σ = 13119408. Its totient is φ = 13104520.

The previous prime is 13111961. The next prime is 13112051. The reversal of 13111963 is 36911131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 36911131 = 17 ⋅2171243.

It is a cyclic number.

It is not a de Polignac number, because 13111963 - 2¹ = 13111961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111961) 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, 570 + ... + 5152.

It is an arithmetic number, because the mean of its divisors is an integer number (3279852).

Almost surely, 2^13111963 is an apocalyptic number.

13111963 is a deficient number, since it is larger than the sum of its proper divisors (7445).

13111963 is an equidigital number, since it uses as much as digits as its factorization.

13111963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7444.

The product of its digits is 486, while the sum is 25.

The square root of 13111963 is about 3621.0444625826. The cubic root of 13111963 is about 235.8065720930.

The spelling of 13111963 in words is "thirteen million, one hundred eleven thousand, nine hundred sixty-three".