131222033 has 2 divisors, whose sum is σ = 131222034. Its totient is φ = 131222032.

The previous prime is 131222029. The next prime is 131222059. The reversal of 131222033 is 330222131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87291649 + 43930384 = 9343^2 + 6628^2 .

It is a cyclic number.

It is not a de Polignac number, because 131222033 - 2² = 131222029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (131222023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611016 + 65611017.

It is an arithmetic number, because the mean of its divisors is an integer number (65611017).

Almost surely, 2^131222033 is an apocalyptic number.

It is an amenable number.

131222033 is a deficient number, since it is larger than the sum of its proper divisors (1).

131222033 is an equidigital number, since it uses as much as digits as its factorization.

131222033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 131222033 is about 11455.2185924146. The cubic root of 131222033 is about 508.1620798980.

Adding to 131222033 its reverse (330222131), we get a palindrome (461444164).

The spelling of 131222033 in words is "one hundred thirty-one million, two hundred twenty-two thousand, thirty-three".