135131474 has 16 divisors (see below), whose sum is σ = 215357400. Its totient is φ = 63471744.

The previous prime is 135131473. The next prime is 135131483. The reversal of 135131474 is 474131531.

It can be written as a sum of positive squares in 4 ways, for example, as 133240849 + 1890625 = 11543^2 + 1375^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (135131471) 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, 29339 + ... + 33630.

Almost surely, 2^135131474 is an apocalyptic number.

135131474 is a deficient number, since it is larger than the sum of its proper divisors (80225926).

135131474 is a wasteful number, since it uses less digits than its factorization.

135131474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63037.

The product of its digits is 5040, while the sum is 29.

The square root of 135131474 is about 11624.6064019389. The cubic root of 135131474 is about 513.1592613625.

The spelling of 135131474 in words is "one hundred thirty-five million, one hundred thirty-one thousand, four hundred seventy-four".