13520111403 has 8 divisors (see below), whose sum is σ = 18030822400. Its totient is φ = 9011404008.

The previous prime is 13520111399. The next prime is 13520111443. The reversal of 13520111403 is 30411102531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13520111403 - 2² = 13520111399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13520111403.

It is not an unprimeable number, because it can be changed into a prime (13520111443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485083 + ... + 512196.

It is an arithmetic number, because the mean of its divisors is an integer number (2253852800).

Almost surely, 2^13520111403 is an apocalyptic number.

13520111403 is a deficient number, since it is larger than the sum of its proper divisors (4510710997).

13520111403 is an equidigital number, since it uses as much as digits as its factorization.

13520111403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001801.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 13520111403 its reverse (30411102531), we get a palindrome (43931213934).

The spelling of 13520111403 in words is "thirteen billion, five hundred twenty million, one hundred eleven thousand, four hundred three".