134731261 has 16 divisors (see below), whose sum is σ = 164147200. Its totient is φ = 108012528.

The previous prime is 134731241. The next prime is 134731283. The reversal of 134731261 is 162137431.

It is a cyclic number.

It is not a de Polignac number, because 134731261 - 2¹⁷ = 134600189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134731241) 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, 4096 + ... + 16918.

It is an arithmetic number, because the mean of its divisors is an integer number (10259200).

Almost surely, 2^134731261 is an apocalyptic number.

It is an amenable number.

134731261 is a deficient number, since it is larger than the sum of its proper divisors (29415939).

134731261 is a wasteful number, since it uses less digits than its factorization.

134731261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928.

The product of its digits is 3024, while the sum is 28.

The square root of 134731261 is about 11607.3795923111. The cubic root of 134731261 is about 512.6521599356.

Adding to 134731261 its reverse (162137431), we get a palindrome (296868692).

The spelling of 134731261 in words is "one hundred thirty-four million, seven hundred thirty-one thousand, two hundred sixty-one".