134542531 has 2 divisors, whose sum is σ = 134542532. Its totient is φ = 134542530.

The previous prime is 134542523. The next prime is 134542543. The reversal of 134542531 is 135245431.

It is a weak prime.

It is an emirp because it is prime and its reverse (135245431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134542531 - 2³ = 134542523 is a prime.

It is a super-2 number, since 2×134542531² = 36203385295771922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134542531.

It is not a weakly prime, because it can be changed into another prime (134542561) 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, 67271265 + 67271266.

It is an arithmetic number, because the mean of its divisors is an integer number (67271266).

Almost surely, 2^134542531 is an apocalyptic number.

134542531 is a deficient number, since it is larger than the sum of its proper divisors (1).

134542531 is an equidigital number, since it uses as much as digits as its factorization.

134542531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 134542531 is about 11599.2470014221. The cubic root of 134542531 is about 512.4126756631.

Adding to 134542531 its reverse (135245431), we get a palindrome (269787962).

The spelling of 134542531 in words is "one hundred thirty-four million, five hundred forty-two thousand, five hundred thirty-one".