133342331 has 4 divisors (see below), whose sum is σ = 135220464. Its totient is φ = 131464200.

The previous prime is 133342327. The next prime is 133342351. The reversal of 133342331 is 133243331.

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 133342331 - 2² = 133342327 is a prime.

It is a super-2 number, since 2×133342331² = 35560354473027122, 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 = 133342297 and 133342306.

It is not an unprimeable number, because it can be changed into a prime (133342351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938960 + ... + 939101.

It is an arithmetic number, because the mean of its divisors is an integer number (33805116).

Almost surely, 2^133342331 is an apocalyptic number.

133342331 is a deficient number, since it is larger than the sum of its proper divisors (1878133).

133342331 is an equidigital number, since it uses as much as digits as its factorization.

133342331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878132.

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

The square root of 133342331 is about 11547.3949876152. The cubic root of 133342331 is about 510.8844463319.

Adding to 133342331 its reverse (133243331), we get a palindrome (266585662).

The spelling of 133342331 in words is "one hundred thirty-three million, three hundred forty-two thousand, three hundred thirty-one".