133343231 has 8 divisors (see below), whose sum is σ = 154321920. Its totient is φ = 112846968.

The previous prime is 133343207. The next prime is 133343233. The reversal of 133343231 is 132343331.

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 133343231 - 2¹⁴ = 133326847 is a prime.

It is a super-2 number, since 2×133343231² = 35560834507038722, 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 = 133343197 and 133343206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133343233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120011 + ... + 121116.

It is an arithmetic number, because the mean of its divisors is an integer number (19290240).

Almost surely, 2^133343231 is an apocalyptic number.

133343231 is a deficient number, since it is larger than the sum of its proper divisors (20978689).

133343231 is an equidigital number, since it uses as much as digits as its factorization.

133343231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241213.

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

The square root of 133343231 is about 11547.4339573777. The cubic root of 133343231 is about 510.8855957418.

Adding to 133343231 its reverse (132343331), we get a palindrome (265686562).

The spelling of 133343231 in words is "one hundred thirty-three million, three hundred forty-three thousand, two hundred thirty-one".