134513531 has 2 divisors, whose sum is σ = 134513532. Its totient is φ = 134513530.

The previous prime is 134513527. The next prime is 134513573. The reversal of 134513531 is 135315431.

It is a weak prime.

It is an emirp because it is prime and its reverse (135315431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134513531 - 2² = 134513527 is a prime.

It is a super-2 number, since 2×134513531² = 36187780044175922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134513531.

It is not a weakly prime, because it can be changed into another prime (134513501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67256765 + 67256766.

It is an arithmetic number, because the mean of its divisors is an integer number (67256766).

Almost surely, 2^134513531 is an apocalyptic number.

134513531 is a deficient number, since it is larger than the sum of its proper divisors (1).

134513531 is an equidigital number, since it uses as much as digits as its factorization.

134513531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 26.

The square root of 134513531 is about 11597.9968529052. The cubic root of 134513531 is about 512.3758569826.

Adding to 134513531 its reverse (135315431), we get a palindrome (269828962).

The spelling of 134513531 in words is "one hundred thirty-four million, five hundred thirteen thousand, five hundred thirty-one".