134831 has 4 divisors (see below), whose sum is σ = 136752. Its totient is φ = 132912.

The previous prime is 134807. The next prime is 134837. The reversal of 134831 is 138431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134831 is a prime.

It is a super-2 number, since 2×134831² = 36358797122, 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 (134837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851 + ... + 996.

It is an arithmetic number, because the mean of its divisors is an integer number (34188).

2¹³⁴⁸³¹ is an apocalyptic number.

134831 is a deficient number, since it is larger than the sum of its proper divisors (1921).

134831 is an equidigital number, since it uses as much as digits as its factorization.

134831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its digits is 288, while the sum is 20.

The square root of 134831 is about 367.1934095269. The cubic root of 134831 is about 51.2778630960.

Subtracting 134831 from its reverse (138431), we obtain a square (3600 = 60²).

The spelling of 134831 in words is "one hundred thirty-four thousand, eight hundred thirty-one".