134311221 has 36 divisors (see below), whose sum is σ = 217736064. Its totient is φ = 79120800.

The previous prime is 134311211. The next prime is 134311223. The reversal of 134311221 is 122113431.

134311221 is a `hidden beast` number, since 13 + 431 + 1 + 221 = 666.

It is not a de Polignac number, because 134311221 - 2¹¹ = 134309173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 134311194 and 134311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134311223) 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 in 35 ways as a sum of consecutive naturals, for example, 135036 + ... + 136026.

It is an arithmetic number, because the mean of its divisors is an integer number (6048224).

Almost surely, 2^134311221 is an apocalyptic number.

134311221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134311221 is a deficient number, since it is larger than the sum of its proper divisors (83424843).

134311221 is a wasteful number, since it uses less digits than its factorization.

134311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1042 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 134311221 is about 11589.2718062871. The cubic root of 134311221 is about 512.1188549042.

Adding to 134311221 its reverse (122113431), we get a palindrome (256424652).

The spelling of 134311221 in words is "one hundred thirty-four million, three hundred eleven thousand, two hundred twenty-one".