134311021 has 8 divisors (see below), whose sum is σ = 146625080. Its totient is φ = 122280192.

The previous prime is 134310997. The next prime is 134311031. The reversal of 134311021 is 120113431.

It can be written as a sum of positive squares in 4 ways, for example, as 75625 + 134235396 = 275^2 + 11586^2 .

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 134311021 - 2⁹ = 134310509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134310986 and 134311004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134311031) 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 7 ways as a sum of consecutive naturals, for example, 69816 + ... + 71713.

It is an arithmetic number, because the mean of its divisors is an integer number (18328135).

Almost surely, 2^134311021 is an apocalyptic number.

It is an amenable number.

134311021 is a deficient number, since it is larger than the sum of its proper divisors (12314059).

134311021 is a wasteful number, since it uses less digits than its factorization.

134311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141615.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 134311021 is about 11589.2631776140. The cubic root of 134311021 is about 512.1186007090.

Adding to 134311021 its reverse (120113431), we get a palindrome (254424452).

The spelling of 134311021 in words is "one hundred thirty-four million, three hundred eleven thousand, twenty-one".