134540231 has 6 divisors (see below), whose sum is σ = 156506040. Its totient is φ = 115320156.

The previous prime is 134540207. The next prime is 134540257. The reversal of 134540231 is 132045431.

It is not a de Polignac number, because 134540231 - 2⁶ = 134540167 is a prime.

It is a super-2 number, since 2×134540231² = 36202147515066722, 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 = 134540197 and 134540206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134540201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1372811 + ... + 1372908.

It is an arithmetic number, because the mean of its divisors is an integer number (26084340).

Almost surely, 2^134540231 is an apocalyptic number.

134540231 is a deficient number, since it is larger than the sum of its proper divisors (21965809).

134540231 is an equidigital number, since it uses as much as digits as its factorization.

134540231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745733 (or 2745726 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 134540231 is about 11599.1478566315. The cubic root of 134540231 is about 512.4097557540.

Adding to 134540231 its reverse (132045431), we get a palindrome (266585662).

The spelling of 134540231 in words is "one hundred thirty-four million, five hundred forty thousand, two hundred thirty-one".