133100431 has 2 divisors, whose sum is σ = 133100432. Its totient is φ = 133100430.

The previous prime is 133100417. The next prime is 133100441. The reversal of 133100431 is 134001331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133100431 - 2⁵ = 133100399 is a prime.

It is a super-2 number, since 2×133100431² = 35431449464771522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133100441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66550215 + 66550216.

It is an arithmetic number, because the mean of its divisors is an integer number (66550216).

Almost surely, 2^133100431 is an apocalyptic number.

133100431 is a deficient number, since it is larger than the sum of its proper divisors (1).

133100431 is an equidigital number, since it uses as much as digits as its factorization.

133100431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133100431 is about 11536.9160090555. The cubic root of 133100431 is about 510.5753228056.

Adding to 133100431 its reverse (134001331), we get a palindrome (267101762).

The spelling of 133100431 in words is "one hundred thirty-three million, one hundred thousand, four hundred thirty-one".