134231231 has 4 divisors (see below), whose sum is σ = 135419232. Its totient is φ = 133043232.

The previous prime is 134231189. The next prime is 134231249. The reversal of 134231231 is 132132431.

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-134231231 is a prime.

It is a super-2 number, since 2×134231231² = 36036046751550722, 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 (134231261) 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 3 ways as a sum of consecutive naturals, for example, 593831 + ... + 594056.

It is an arithmetic number, because the mean of its divisors is an integer number (33854808).

Almost surely, 2^134231231 is an apocalyptic number.

134231231 is a deficient number, since it is larger than the sum of its proper divisors (1188001).

134231231 is a wasteful number, since it uses less digits than its factorization.

134231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188000.

The product of its digits is 432, while the sum is 20.

The square root of 134231231 is about 11585.8202558127. The cubic root of 134231231 is about 512.0171693766.

Adding to 134231231 its reverse (132132431), we get a palindrome (266363662).

The spelling of 134231231 in words is "one hundred thirty-four million, two hundred thirty-one thousand, two hundred thirty-one".