134681381 has 8 divisors (see below), whose sum is σ = 136181760. Its totient is φ = 133186032.

The previous prime is 134681377. The next prime is 134681411. The reversal of 134681381 is 183186431.

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 134681381 - 2² = 134681377 is a prime.

It is a super-2 number, since 2×134681381² = 36278148776134322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134686381) 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, 80156 + ... + 81818.

It is an arithmetic number, because the mean of its divisors is an integer number (17022720).

Almost surely, 2^134681381 is an apocalyptic number.

It is an amenable number.

134681381 is a deficient number, since it is larger than the sum of its proper divisors (1500379).

134681381 is a wasteful number, since it uses less digits than its factorization.

134681381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515.

The product of its digits is 13824, while the sum is 35.

The square root of 134681381 is about 11605.2307603080. The cubic root of 134681381 is about 512.5888876957.

The spelling of 134681381 in words is "one hundred thirty-four million, six hundred eighty-one thousand, three hundred eighty-one".