13531201405 has 32 divisors (see below), whose sum is σ = 17207562240. Its totient is φ = 10186182720.

The previous prime is 13531201403. The next prime is 13531201417. The reversal of 13531201405 is 50410213531.

It is a happy number.

It is not a de Polignac number, because 13531201405 - 2¹ = 13531201403 is a prime.

It is a super-2 number, since 2×13531201405² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13531201405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531201403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12267084 + ... + 12268186.

It is an arithmetic number, because the mean of its divisors is an integer number (537736320).

Almost surely, 2^13531201405 is an apocalyptic number.

It is an amenable number.

13531201405 is a deficient number, since it is larger than the sum of its proper divisors (3676360835).

13531201405 is a wasteful number, since it uses less digits than its factorization.

13531201405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 13531201405 its reverse (50410213531), we get a palindrome (63941414936).

The spelling of 13531201405 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, four hundred five".