134239931 has 8 divisors (see below), whose sum is σ = 154825440. Its totient is φ = 114006528.

The previous prime is 134239901. The next prime is 134239969. The reversal of 134239931 is 139932431.

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 134239931 - 2²² = 130045627 is a prime.

It is a super-2 number, since 2×134239931² = 36040718149769522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 134239891 and 134239900.

It is not an unprimeable number, because it can be changed into a prime (134239901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87206 + ... + 88731.

It is an arithmetic number, because the mean of its divisors is an integer number (19353180).

Almost surely, 2^134239931 is an apocalyptic number.

134239931 is a deficient number, since it is larger than the sum of its proper divisors (20585509).

134239931 is a wasteful number, since it uses less digits than its factorization.

134239931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176053.

The product of its digits is 17496, while the sum is 35.

The square root of 134239931 is about 11586.1957086871. The cubic root of 134239931 is about 512.0282310178.

The spelling of 134239931 in words is "one hundred thirty-four million, two hundred thirty-nine thousand, nine hundred thirty-one".