134221523 has 12 divisors (see below), whose sum is σ = 138100680. Its totient is φ = 130432896.

The previous prime is 134221501. The next prime is 134221603. The reversal of 134221523 is 325122431.

It is not a de Polignac number, because 134221523 - 2⁸ = 134221267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134220523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 474140 + ... + 474422.

It is an arithmetic number, because the mean of its divisors is an integer number (11508390).

Almost surely, 2^134221523 is an apocalyptic number.

134221523 is a deficient number, since it is larger than the sum of its proper divisors (3879157).

134221523 is an frugal number, since it uses more digits than its factorization.

134221523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 445 counting only the distinct ones).

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

The square root of 134221523 is about 11585.4012878277. The cubic root of 134221523 is about 512.0048255466.

Adding to 134221523 its reverse (325122431), we get a palindrome (459343954).

The spelling of 134221523 in words is "one hundred thirty-four million, two hundred twenty-one thousand, five hundred twenty-three".