135231315033440 has 48 divisors (see below), whose sum is σ = 324252399430512. Its totient is φ = 53285174874624.

The previous prime is 135231315033383. The next prime is 135231315033449. The reversal of 135231315033440 is 44330513132531.

It is a junction number, because it is equal to n+sod(n) for n = 135231315033394 and 135231315033403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135231315033449) 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, 6307420019 + ... + 6307441458.

It is an arithmetic number, because the mean of its divisors is an integer number (6755258321469).

Almost surely, 2^{135231315033440} is an apocalyptic number.

135231315033440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135231315033440 is an abundant number, since it is smaller than the sum of its proper divisors (189021084397072).

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

135231315033440 is a wasteful number, since it uses less digits than its factorization.

135231315033440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12614861559 (or 12614861551 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 38.

Adding to 135231315033440 its reverse (44330513132531), we get a palindrome (179561828165971).

The spelling of 135231315033440 in words is "one hundred thirty-five trillion, two hundred thirty-one billion, three hundred fifteen million, thirty-three thousand, four hundred forty".