135431725340 has 24 divisors (see below), whose sum is σ = 284439505392. Its totient is φ = 54166426880.

The previous prime is 135431725327. The next prime is 135431725349. The reversal of 135431725340 is 43527134531.

It is a junction number, because it is equal to n+sod(n) for n = 135431725294 and 135431725303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135431725349) 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, 212141 + ... + 562020.

It is an arithmetic number, because the mean of its divisors is an integer number (11851646058).

Almost surely, 2^135431725340 is an apocalyptic number.

135431725340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135431725340 is an abundant number, since it is smaller than the sum of its proper divisors (149007780052).

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

135431725340 is a wasteful number, since it uses less digits than its factorization.

135431725340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782917 (or 782915 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 38.

Adding to 135431725340 its reverse (43527134531), we get a palindrome (178958859871).

The spelling of 135431725340 in words is "one hundred thirty-five billion, four hundred thirty-one million, seven hundred twenty-five thousand, three hundred forty".