131566333 has 2 divisors, whose sum is σ = 131566334. Its totient is φ = 131566332.

The previous prime is 131566291. The next prime is 131566361. The reversal of 131566333 is 333665131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102373924 + 29192409 = 10118^2 + 5403^2 .

It is a cyclic number.

It is not a de Polignac number, because 131566333 - 2¹⁷ = 131435261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131566295 and 131566304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131566033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65783166 + 65783167.

It is an arithmetic number, because the mean of its divisors is an integer number (65783167).

Almost surely, 2^131566333 is an apocalyptic number.

It is an amenable number.

131566333 is a deficient number, since it is larger than the sum of its proper divisors (1).

131566333 is an equidigital number, since it uses as much as digits as its factorization.

131566333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 31.

The square root of 131566333 is about 11470.2368327773. The cubic root of 131566333 is about 508.6061298358.

The spelling of 131566333 in words is "one hundred thirty-one million, five hundred sixty-six thousand, three hundred thirty-three".