13453532531 has 16 divisors (see below), whose sum is σ = 14551225344. Its totient is φ = 12406747584.

The previous prime is 13453532461. The next prime is 13453532537. The reversal of 13453532531 is 13523535431.

It is a happy number.

It is not a de Polignac number, because 13453532531 - 2¹⁸ = 13453270387 is a prime.

It is a super-2 number, since 2×13453532531² (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 = 13453532491 and 13453532500.

It is not an unprimeable number, because it can be changed into a prime (13453532537) 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, 20450 + ... + 165303.

It is an arithmetic number, because the mean of its divisors is an integer number (909451584).

Almost surely, 2^13453532531 is an apocalyptic number.

13453532531 is a deficient number, since it is larger than the sum of its proper divisors (1097692813).

13453532531 is a wasteful number, since it uses less digits than its factorization.

13453532531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185890.

The product of its digits is 81000, while the sum is 35.

The spelling of 13453532531 in words is "thirteen billion, four hundred fifty-three million, five hundred thirty-two thousand, five hundred thirty-one".