135274531 has 16 divisors (see below), whose sum is σ = 160516800. Its totient is φ = 111541248.

The previous prime is 135274519. The next prime is 135274549. The reversal of 135274531 is 135472531.

It is a happy number.

It is not a de Polignac number, because 135274531 - 2⁹ = 135274019 is a prime.

It is a super-2 number, since 2×135274531² = 36598397474539922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135274493 and 135274502.

It is not an unprimeable number, because it can be changed into a prime (135274501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62475 + ... + 64603.

It is an arithmetic number, because the mean of its divisors is an integer number (10032300).

Almost surely, 2^135274531 is an apocalyptic number.

135274531 is a deficient number, since it is larger than the sum of its proper divisors (25242269).

135274531 is a wasteful number, since it uses less digits than its factorization.

135274531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478.

The product of its digits is 12600, while the sum is 31.

The square root of 135274531 is about 11630.7579718606. The cubic root of 135274531 is about 513.3402829310.

The spelling of 135274531 in words is "one hundred thirty-five million, two hundred seventy-four thousand, five hundred thirty-one".