135311420 has 48 divisors (see below), whose sum is σ = 290793888. Its totient is φ = 52872960.

The previous prime is 135311399. The next prime is 135311447. The reversal of 135311420 is 24113531.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 135311392 and 135311401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240059 + ... + 240621.

It is an arithmetic number, because the mean of its divisors is an integer number (6058206).

Almost surely, 2^135311420 is an apocalyptic number.

135311420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135311420 is an abundant number, since it is smaller than the sum of its proper divisors (155482468).

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

135311420 is a wasteful number, since it uses less digits than its factorization.

135311420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 135311420 is about 11632.3437019373. The cubic root of 135311420 is about 513.3869408606.

Adding to 135311420 its reverse (24113531), we get a palindrome (159424951).

The spelling of 135311420 in words is "one hundred thirty-five million, three hundred eleven thousand, four hundred twenty".