134633381 has 12 divisors (see below), whose sum is σ = 139752900. Its totient is φ = 129623040.

The previous prime is 134633377. The next prime is 134633407. The reversal of 134633381 is 183336431.

It can be written as a sum of positive squares in 6 ways, for example, as 5924356 + 128709025 = 2434^2 + 11345^2 .

It is not a de Polignac number, because 134633381 - 2² = 134633377 is a prime.

It is a super-2 number, since 2×134633381² = 36252294558982322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134633281) 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, 385595 + ... + 385943.

It is an arithmetic number, because the mean of its divisors is an integer number (11646075).

Almost surely, 2^134633381 is an apocalyptic number.

It is an amenable number.

134633381 is a deficient number, since it is larger than the sum of its proper divisors (5119519).

134633381 is an frugal number, since it uses more digits than its factorization.

134633381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 487 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 134633381 is about 11603.1625430311. The cubic root of 134633381 is about 512.5279854637.

The spelling of 134633381 in words is "one hundred thirty-four million, six hundred thirty-three thousand, three hundred eighty-one".