13401331523 has 16 divisors (see below), whose sum is σ = 14425568640. Its totient is φ = 12405012096.

The previous prime is 13401331519. The next prime is 13401331583. The reversal of 13401331523 is 32513310431.

It is a cyclic number.

It is not a de Polignac number, because 13401331523 - 2² = 13401331519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13401331492 and 13401331501.

It is not an unprimeable number, because it can be changed into a prime (13401331583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226340 + ... + 279342.

It is an arithmetic number, because the mean of its divisors is an integer number (901598040).

Almost surely, 2^13401331523 is an apocalyptic number.

13401331523 is a deficient number, since it is larger than the sum of its proper divisors (1024237117).

13401331523 is a wasteful number, since it uses less digits than its factorization.

13401331523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53266.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 13401331523 its reverse (32513310431), we get a palindrome (45914641954).

The spelling of 13401331523 in words is "thirteen billion, four hundred one million, three hundred thirty-one thousand, five hundred twenty-three".