131200243429 has 2 divisors, whose sum is σ = 131200243430. Its totient is φ = 131200243428.

The previous prime is 131200243403. The next prime is 131200243439. The reversal of 131200243429 is 924342002131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131187391204 + 12852225 = 362198^2 + 3585^2 .

It is a cyclic number.

It is not a de Polignac number, because 131200243429 - 2⁵ = 131200243397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131200243429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131200243439) 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, 65600121714 + 65600121715.

It is an arithmetic number, because the mean of its divisors is an integer number (65600121715).

Almost surely, 2^131200243429 is an apocalyptic number.

It is an amenable number.

131200243429 is a deficient number, since it is larger than the sum of its proper divisors (1).

131200243429 is an equidigital number, since it uses as much as digits as its factorization.

131200243429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 131200243429 in words is "one hundred thirty-one billion, two hundred million, two hundred forty-three thousand, four hundred twenty-nine".