131226233 has 2 divisors, whose sum is σ = 131226234. Its totient is φ = 131226232.

The previous prime is 131226197. The next prime is 131226253. The reversal of 131226233 is 332622131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112190464 + 19035769 = 10592^2 + 4363^2 .

It is a cyclic number.

It is not a de Polignac number, because 131226233 - 2¹⁴ = 131209849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131226199 and 131226208.

It is not a weakly prime, because it can be changed into another prime (131226253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65613116 + 65613117.

It is an arithmetic number, because the mean of its divisors is an integer number (65613117).

Almost surely, 2^131226233 is an apocalyptic number.

It is an amenable number.

131226233 is a deficient number, since it is larger than the sum of its proper divisors (1).

131226233 is an equidigital number, since it uses as much as digits as its factorization.

131226233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 131226233 is about 11455.4019135079. The cubic root of 131226233 is about 508.1675013910.

Adding to 131226233 its reverse (332622131), we get a palindrome (463848364).

The spelling of 131226233 in words is "one hundred thirty-one million, two hundred twenty-six thousand, two hundred thirty-three".