13144303531 has 32 divisors (see below), whose sum is σ = 14399078400. Its totient is φ = 11958710400.

The previous prime is 13144303481. The next prime is 13144303553. The reversal of 13144303531 is 13530344131.

It is a cyclic number.

It is not a de Polignac number, because 13144303531 - 2⁹ = 13144303019 is a prime.

It is a super-2 number, since 2×13144303531² (a number of 21 digits) contains 22 as substring.

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 13144303531.

It is not an unprimeable number, because it can be changed into a prime (13144303031) 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, 10102581 + ... + 10103881.

It is an arithmetic number, because the mean of its divisors is an integer number (449971200).

Almost surely, 2^13144303531 is an apocalyptic number.

13144303531 is a deficient number, since it is larger than the sum of its proper divisors (1254774869).

13144303531 is a wasteful number, since it uses less digits than its factorization.

13144303531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 13144303531 its reverse (13530344131), we get a palindrome (26674647662).

The spelling of 13144303531 in words is "thirteen billion, one hundred forty-four million, three hundred three thousand, five hundred thirty-one".