133022431 has 2 divisors, whose sum is σ = 133022432. Its totient is φ = 133022430.

The previous prime is 133022423. The next prime is 133022447. The reversal of 133022431 is 134220331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133022431 - 2³ = 133022423 is a prime.

It is a super-2 number, since 2×133022431² = 35389934298299522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133022399 and 133022408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133022531) 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 as a sum of consecutive naturals, namely, 66511215 + 66511216.

It is an arithmetic number, because the mean of its divisors is an integer number (66511216).

Almost surely, 2^133022431 is an apocalyptic number.

133022431 is a deficient number, since it is larger than the sum of its proper divisors (1).

133022431 is an equidigital number, since it uses as much as digits as its factorization.

133022431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 133022431 is about 11533.5350608562. The cubic root of 133022431 is about 510.4755669123.

Adding to 133022431 its reverse (134220331), we get a palindrome (267242762).

The spelling of 133022431 in words is "one hundred thirty-three million, twenty-two thousand, four hundred thirty-one".