134312231 has 4 divisors (see below), whose sum is σ = 134914752. Its totient is φ = 133709712.

The previous prime is 134312219. The next prime is 134312281. The reversal of 134312231 is 132213431.

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

It is a cyclic number.

It is not a de Polignac number, because 134312231 - 2¹⁸ = 134050087 is a prime.

It is a super-2 number, since 2×134312231² = 36079550792394722, 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 (134312281) 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, 300926 + ... + 301371.

It is an arithmetic number, because the mean of its divisors is an integer number (33728688).

Almost surely, 2^134312231 is an apocalyptic number.

134312231 is a deficient number, since it is larger than the sum of its proper divisors (602521).

134312231 is an equidigital number, since it uses as much as digits as its factorization.

134312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602520.

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

The square root of 134312231 is about 11589.3153809878. The cubic root of 134312231 is about 512.1201385864.

Adding to 134312231 its reverse (132213431), we get a palindrome (266525662).

The spelling of 134312231 in words is "one hundred thirty-four million, three hundred twelve thousand, two hundred thirty-one".