131233229 has 2 divisors, whose sum is σ = 131233230. Its totient is φ = 131233228.

The previous prime is 131233213. The next prime is 131233237. The reversal of 131233229 is 922332131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81036004 + 50197225 = 9002^2 + 7085^2 .

It is a cyclic number.

It is not a de Polignac number, because 131233229 - 2⁴ = 131233213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131233198 and 131233207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131233279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65616614 + 65616615.

It is an arithmetic number, because the mean of its divisors is an integer number (65616615).

Almost surely, 2^131233229 is an apocalyptic number.

It is an amenable number.

131233229 is a deficient number, since it is larger than the sum of its proper divisors (1).

131233229 is an equidigital number, since it uses as much as digits as its factorization.

131233229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

The square root of 131233229 is about 11455.7072675588. The cubic root of 131233229 is about 508.1765317923.

The spelling of 131233229 in words is "one hundred thirty-one million, two hundred thirty-three thousand, two hundred twenty-nine".