13540144531 has 8 divisors (see below), whose sum is σ = 13741596000. Its totient is φ = 13338991680.

The previous prime is 13540144523. The next prime is 13540144571. The reversal of 13540144531 is 13544104531.

13540144531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13540144531 - 2³ = 13540144523 is a prime.

It is a super-2 number, since 2×13540144531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13540144493 and 13540144502.

It is not an unprimeable number, because it can be changed into a prime (13540144571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17545 + ... + 165493.

It is an arithmetic number, because the mean of its divisors is an integer number (1717699500).

Almost surely, 2^13540144531 is an apocalyptic number.

13540144531 is a deficient number, since it is larger than the sum of its proper divisors (201451469).

13540144531 is a wasteful number, since it uses less digits than its factorization.

13540144531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149309.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 13540144531 in words is "thirteen billion, five hundred forty million, one hundred forty-four thousand, five hundred thirty-one".