135376381 has 8 divisors (see below), whose sum is σ = 157025600. Its totient is φ = 114304608.

The previous prime is 135376369. The next prime is 135376399. The reversal of 135376381 is 183673531.

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 135376381 - 2¹⁹ = 134852093 is a prime.

It is a super-2 number, since 2×135376381² = 36653529065314322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135376381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135376331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143856 + ... + 144793.

It is an arithmetic number, because the mean of its divisors is an integer number (19628200).

Almost surely, 2^135376381 is an apocalyptic number.

It is an amenable number.

135376381 is a deficient number, since it is larger than the sum of its proper divisors (21649219).

135376381 is an equidigital number, since it uses as much as digits as its factorization.

135376381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288723.

The product of its digits is 45360, while the sum is 37.

The square root of 135376381 is about 11635.1356244781. The cubic root of 135376381 is about 513.4690841946.

The spelling of 135376381 in words is "one hundred thirty-five million, three hundred seventy-six thousand, three hundred eighty-one".