133334231 has 4 divisors (see below), whose sum is σ = 133377264. Its totient is φ = 133291200.

The previous prime is 133334207. The next prime is 133334233. The reversal of 133334231 is 132433331.

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-133334231 is a prime.

It is a super-2 number, since 2×133334231² = 35556034312722722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133334197 and 133334206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133334233) 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, 16475 + ... + 23196.

It is an arithmetic number, because the mean of its divisors is an integer number (33344316).

Almost surely, 2^133334231 is an apocalyptic number.

133334231 is a deficient number, since it is larger than the sum of its proper divisors (43033).

133334231 is an equidigital number, since it uses as much as digits as its factorization.

133334231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43032.

The product of its digits is 1944, while the sum is 23.

The square root of 133334231 is about 11547.0442538340. The cubic root of 133334231 is about 510.8741014105.

Adding to 133334231 its reverse (132433331), we get a palindrome (265767562).

The spelling of 133334231 in words is "one hundred thirty-three million, three hundred thirty-four thousand, two hundred thirty-one".