135131051 has 4 divisors (see below), whose sum is σ = 147415704. Its totient is φ = 122846400.

The previous prime is 135131041. The next prime is 135131053. The reversal of 135131051 is 150131531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150131531 = 11 ⋅13648321.

It is a cyclic number.

It is not a de Polignac number, because 135131051 - 2¹⁰ = 135130027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135131053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6142310 + ... + 6142331.

It is an arithmetic number, because the mean of its divisors is an integer number (36853926).

Almost surely, 2^135131051 is an apocalyptic number.

135131051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135131051 is a deficient number, since it is larger than the sum of its proper divisors (12284653).

135131051 is a wasteful number, since it uses less digits than its factorization.

135131051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12284652.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 135131051 is about 11624.5882077603. The cubic root of 135131051 is about 513.1587259170.

Adding to 135131051 its reverse (150131531), we get a palindrome (285262582).

The spelling of 135131051 in words is "one hundred thirty-five million, one hundred thirty-one thousand, fifty-one".