133322231 has 16 divisors (see below), whose sum is σ = 156380928. Its totient is φ = 111283200.

The previous prime is 133322213. The next prime is 133322257. The reversal of 133322231 is 132223331.

It is not a de Polignac number, because 133322231 - 2¹⁸ = 133060087 is a prime.

It is a super-2 number, since 2×133322231² = 35549634557634722, 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 (133322261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192596 + ... + 193286.

It is an arithmetic number, because the mean of its divisors is an integer number (9773808).

Almost surely, 2^133322231 is an apocalyptic number.

133322231 is a deficient number, since it is larger than the sum of its proper divisors (23058697).

133322231 is an equidigital number, since it uses as much as digits as its factorization.

133322231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382.

The product of its digits is 648, while the sum is 20.

The square root of 133322231 is about 11546.5246286491. The cubic root of 133322231 is about 510.8587748309.

Adding to 133322231 its reverse (132223331), we get a palindrome (265545562).

The spelling of 133322231 in words is "one hundred thirty-three million, three hundred twenty-two thousand, two hundred thirty-one".