131223167 has 2 divisors, whose sum is σ = 131223168. Its totient is φ = 131223166.

The previous prime is 131223149. The next prime is 131223179. The reversal of 131223167 is 761322131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131223167 - 2¹⁸ = 130961023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131223767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611583 + 65611584.

It is an arithmetic number, because the mean of its divisors is an integer number (65611584).

Almost surely, 2^131223167 is an apocalyptic number.

131223167 is a deficient number, since it is larger than the sum of its proper divisors (1).

131223167 is an equidigital number, since it uses as much as digits as its factorization.

131223167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 131223167 is about 11455.2680893989. The cubic root of 131223167 is about 508.1635437125.

Adding to 131223167 its reverse (761322131), we get a palindrome (892545298).

The spelling of 131223167 in words is "one hundred thirty-one million, two hundred twenty-three thousand, one hundred sixty-seven".