131622233 has 2 divisors, whose sum is σ = 131622234. Its totient is φ = 131622232.

The previous prime is 131622223. The next prime is 131622241. The reversal of 131622233 is 332226131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119421184 + 12201049 = 10928^2 + 3493^2 .

It is a cyclic number.

It is not a de Polignac number, because 131622233 - 2⁴ = 131622217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131622199 and 131622208.

It is not a weakly prime, because it can be changed into another prime (131622203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65811116 + 65811117.

It is an arithmetic number, because the mean of its divisors is an integer number (65811117).

Almost surely, 2^131622233 is an apocalyptic number.

It is an amenable number.

131622233 is a deficient number, since it is larger than the sum of its proper divisors (1).

131622233 is an equidigital number, since it uses as much as digits as its factorization.

131622233 is an odious number, because the sum of its binary digits is odd.

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

The square root of 131622233 is about 11472.6733153176. The cubic root of 131622233 is about 508.6781519515.

Adding to 131622233 its reverse (332226131), we get a palindrome (463848364).

The spelling of 131622233 in words is "one hundred thirty-one million, six hundred twenty-two thousand, two hundred thirty-three".