134981 has 8 divisors (see below), whose sum is σ = 168384. Its totient is φ = 105120.

The previous prime is 134951. The next prime is 134989. The reversal of 134981 is 189431.

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 134981 - 2⁶ = 134917 is a prime.

It is a super-2 number, since 2×134981² = 36439740722, 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 134981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134989) 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, 800 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (21048).

2¹³⁴⁹⁸¹ is an apocalyptic number.

134981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134981 is a deficient number, since it is larger than the sum of its proper divisors (33403).

134981 is a wasteful number, since it uses less digits than its factorization.

134981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771.

The product of its digits is 864, while the sum is 26.

The square root of 134981 is about 367.3976047826. The cubic root of 134981 is about 51.2968716546.

It can be divided in two parts, 13 and 4981, that added together give a palindrome (4994).

The spelling of 134981 in words is "one hundred thirty-four thousand, nine hundred eighty-one".