135131801 has 8 divisors (see below), whose sum is σ = 154602240. Its totient is φ = 115702848.

The previous prime is 135131797. The next prime is 135131813. The reversal of 135131801 is 108131531.

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 135131801 - 2² = 135131797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135131501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3041 + ... + 16718.

It is an arithmetic number, because the mean of its divisors is an integer number (19325280).

Almost surely, 2^135131801 is an apocalyptic number.

It is an amenable number.

135131801 is a deficient number, since it is larger than the sum of its proper divisors (19470439).

135131801 is an equidigital number, since it uses as much as digits as its factorization.

135131801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20743.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 135131801 is about 11624.6204669228. The cubic root of 135131801 is about 513.1596752876.

The spelling of 135131801 in words is "one hundred thirty-five million, one hundred thirty-one thousand, eight hundred one".