134513221 has 8 divisors (see below), whose sum is σ = 136442880. Its totient is φ = 132589392.

The previous prime is 134513189. The next prime is 134513233. The reversal of 134513221 is 122315431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134513221 - 2⁵ = 134513189 is a prime.

It is a super-3 number, since 3×134513221³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134513192 and 134513201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134513261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67191 + ... + 69163.

It is an arithmetic number, because the mean of its divisors is an integer number (17055360).

Almost surely, 2^134513221 is an apocalyptic number.

It is an amenable number.

134513221 is a deficient number, since it is larger than the sum of its proper divisors (1929659).

134513221 is an equidigital number, since it uses as much as digits as its factorization.

134513221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915.

The product of its digits is 720, while the sum is 22.

The square root of 134513221 is about 11597.9834885208. The cubic root of 134513221 is about 512.3754633750.

Adding to 134513221 its reverse (122315431), we get a palindrome (256828652).

The spelling of 134513221 in words is "one hundred thirty-four million, five hundred thirteen thousand, two hundred twenty-one".