131173019 has 2 divisors, whose sum is σ = 131173020. Its totient is φ = 131173018.

The previous prime is 131173001. The next prime is 131173067. The reversal of 131173019 is 910371131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131173019 - 2⁸ = 131172763 is a prime.

It is a super-2 number, since 2×131173019² = 34412721827148722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131173079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65586509 + 65586510.

It is an arithmetic number, because the mean of its divisors is an integer number (65586510).

Almost surely, 2^131173019 is an apocalyptic number.

131173019 is a deficient number, since it is larger than the sum of its proper divisors (1).

131173019 is an equidigital number, since it uses as much as digits as its factorization.

131173019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 131173019 is about 11453.0790183252. The cubic root of 131173019 is about 508.0988025217.

The spelling of 131173019 in words is "one hundred thirty-one million, one hundred seventy-three thousand, nineteen".