13531453140 has 24 divisors (see below), whose sum is σ = 37888068960. Its totient is φ = 3608387488.

The previous prime is 13531453121. The next prime is 13531453141. The reversal of 13531453140 is 4135413531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13531453098 and 13531453107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531453141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112762050 + ... + 112762169.

It is an arithmetic number, because the mean of its divisors is an integer number (1578669540).

Almost surely, 2^13531453140 is an apocalyptic number.

13531453140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531453140 is an abundant number, since it is smaller than the sum of its proper divisors (24356615820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13531453140 is a wasteful number, since it uses less digits than its factorization.

13531453140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225524231 (or 225524229 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 13531453140 its reverse (4135413531), we get a palindrome (17666866671).

The spelling of 13531453140 in words is "thirteen billion, five hundred thirty-one million, four hundred fifty-three thousand, one hundred forty".