133431312233 has 2 divisors, whose sum is σ = 133431312234. Its totient is φ = 133431312232.

The previous prime is 133431312229. The next prime is 133431312263. The reversal of 133431312233 is 332213134331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91477212304 + 41954099929 = 302452^2 + 204827^2 .

It is a cyclic number.

It is not a de Polignac number, because 133431312233 - 2² = 133431312229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133431312196 and 133431312205.

It is not a weakly prime, because it can be changed into another prime (133431312263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66715656116 + 66715656117.

It is an arithmetic number, because the mean of its divisors is an integer number (66715656117).

Almost surely, 2^133431312233 is an apocalyptic number.

It is an amenable number.

133431312233 is a deficient number, since it is larger than the sum of its proper divisors (1).

133431312233 is an equidigital number, since it uses as much as digits as its factorization.

133431312233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 29.

Adding to 133431312233 its reverse (332213134331), we get a palindrome (465644446564).

The spelling of 133431312233 in words is "one hundred thirty-three billion, four hundred thirty-one million, three hundred twelve thousand, two hundred thirty-three".