13111323320 has 16 divisors (see below), whose sum is σ = 29500477560. Its totient is φ = 5244529312.

The previous prime is 13111323311. The next prime is 13111323361. The reversal of 13111323320 is 2332311131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13111323292 and 13111323301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163891502 + ... + 163891581.

Almost surely, 2^13111323320 is an apocalyptic number.

13111323320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111323320 is an abundant number, since it is smaller than the sum of its proper divisors (16389154240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111323320 is a wasteful number, since it uses less digits than its factorization.

13111323320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327783094 (or 327783090 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13111323320 its reverse (2332311131), we get a palindrome (15443634451).

The spelling of 13111323320 in words is "thirteen billion, one hundred eleven million, three hundred twenty-three thousand, three hundred twenty".