134213985 has 48 divisors (see below), whose sum is σ = 240973200. Its totient is φ = 69050880.

The previous prime is 134213983. The next prime is 134214007. The reversal of 134213985 is 589312431.

It can be written as a sum of positive squares in 8 ways, for example, as 1710864 + 132503121 = 1308^2 + 11511^2 .

It is not a de Polignac number, because 134213985 - 2¹ = 134213983 is a prime.

It is a super-3 number, since 3×134213985³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (134213983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247815 + ... + 248355.

It is an arithmetic number, because the mean of its divisors is an integer number (5020275).

Almost surely, 2^134213985 is an apocalyptic number.

134213985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

134213985 is a deficient number, since it is larger than the sum of its proper divisors (106759215).

134213985 is a wasteful number, since it uses less digits than its factorization.

134213985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 735 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 134213985 is about 11585.0759600445. The cubic root of 134213985 is about 511.9952404851.

The spelling of 134213985 in words is "one hundred thirty-four million, two hundred thirteen thousand, nine hundred eighty-five".