135131401 has 8 divisors (see below), whose sum is σ = 143119520. Its totient is φ = 127230912.

The previous prime is 135131393. The next prime is 135131431. The reversal of 135131401 is 104131531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135131401 - 2³ = 135131393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135131431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18720 + ... + 24913.

It is an arithmetic number, because the mean of its divisors is an integer number (17889940).

Almost surely, 2^135131401 is an apocalyptic number.

It is an amenable number.

135131401 is a deficient number, since it is larger than the sum of its proper divisors (7988119).

135131401 is a wasteful number, since it uses less digits than its factorization.

135131401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43815.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 135131401 is about 11624.6032620473. The cubic root of 135131401 is about 513.1591689571.

Adding to 135131401 its reverse (104131531), we get a palindrome (239262932).

The spelling of 135131401 in words is "one hundred thirty-five million, one hundred thirty-one thousand, four hundred one".