131020049 has 2 divisors, whose sum is σ = 131020050. Its totient is φ = 131020048.

The previous prime is 131020031. The next prime is 131020069. The reversal of 131020049 is 940020131.

It is an a-pointer prime, because the next prime (131020069) can be obtained adding 131020049 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106090000 + 24930049 = 10300^2 + 4993^2 .

It is a cyclic number.

It is not a de Polignac number, because 131020049 - 2⁸ = 131019793 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131020049.

It is not a weakly prime, because it can be changed into another prime (131020069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510024 + 65510025.

It is an arithmetic number, because the mean of its divisors is an integer number (65510025).

Almost surely, 2^131020049 is an apocalyptic number.

It is an amenable number.

131020049 is a deficient number, since it is larger than the sum of its proper divisors (1).

131020049 is an equidigital number, since it uses as much as digits as its factorization.

131020049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 131020049 is about 11446.3989533827. The cubic root of 131020049 is about 507.9012158861.

The spelling of 131020049 in words is "one hundred thirty-one million, twenty thousand, forty-nine".