134518261 has 2 divisors, whose sum is σ = 134518262. Its totient is φ = 134518260.

The previous prime is 134518259. The next prime is 134518301. The reversal of 134518261 is 162815431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100120036 + 34398225 = 10006^2 + 5865^2 .

It is a cyclic number.

It is not a de Polignac number, because 134518261 - 2¹ = 134518259 is a prime.

Together with 134518259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134518201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67259130 + 67259131.

It is an arithmetic number, because the mean of its divisors is an integer number (67259131).

Almost surely, 2^134518261 is an apocalyptic number.

It is an amenable number.

134518261 is a deficient number, since it is larger than the sum of its proper divisors (1).

134518261 is an equidigital number, since it uses as much as digits as its factorization.

134518261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 31.

The square root of 134518261 is about 11598.2007656360. The cubic root of 134518261 is about 512.3818625975.

It can be divided in two parts, 13451 and 8261, that added together give a palindrome (21712).

The spelling of 134518261 in words is "one hundred thirty-four million, five hundred eighteen thousand, two hundred sixty-one".