13142065531 has 6 divisors (see below), whose sum is σ = 15287708940. Its totient is φ = 11264627556.

The previous prime is 13142065529. The next prime is 13142065589. The reversal of 13142065531 is 13556024131.

It is not a de Polignac number, because 13142065531 - 2¹ = 13142065529 is a prime.

It is a super-2 number, since 2×13142065531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13142065493 and 13142065502.

It is not an unprimeable number, because it can be changed into a prime (13142065591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134102661 + ... + 134102758.

It is an arithmetic number, because the mean of its divisors is an integer number (2547951490).

Almost surely, 2^13142065531 is an apocalyptic number.

13142065531 is a deficient number, since it is larger than the sum of its proper divisors (2145643409).

13142065531 is an equidigital number, since it uses as much as digits as its factorization.

13142065531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268205433 (or 268205426 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 13142065531 its reverse (13556024131), we get a palindrome (26698089662).

The spelling of 13142065531 in words is "thirteen billion, one hundred forty-two million, sixty-five thousand, five hundred thirty-one".