131506223 has 2 divisors, whose sum is σ = 131506224. Its totient is φ = 131506222.

The previous prime is 131506189. The next prime is 131506231. The reversal of 131506223 is 322605131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131506223 - 2⁸ = 131505967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131506253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65753111 + 65753112.

It is an arithmetic number, because the mean of its divisors is an integer number (65753112).

Almost surely, 2^131506223 is an apocalyptic number.

131506223 is a deficient number, since it is larger than the sum of its proper divisors (1).

131506223 is an equidigital number, since it uses as much as digits as its factorization.

131506223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 131506223 is about 11467.6162736639. The cubic root of 131506223 is about 508.5286607475.

The spelling of 131506223 in words is "one hundred thirty-one million, five hundred six thousand, two hundred twenty-three".