131443019 has 2 divisors, whose sum is σ = 131443020. Its totient is φ = 131443018.

The previous prime is 131443009. The next prime is 131443027. The reversal of 131443019 is 910344131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131443019 - 2⁴ = 131443003 is a prime.

It is a super-2 number, since 2×131443019² = 34554534487668722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131443009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65721509 + 65721510.

It is an arithmetic number, because the mean of its divisors is an integer number (65721510).

Almost surely, 2^131443019 is an apocalyptic number.

131443019 is a deficient number, since it is larger than the sum of its proper divisors (1).

131443019 is an equidigital number, since it uses as much as digits as its factorization.

131443019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 131443019 is about 11464.8601823136. The cubic root of 131443019 is about 508.4471786820.

The spelling of 131443019 in words is "one hundred thirty-one million, four hundred forty-three thousand, nineteen".