1000131449 has 2 divisors, whose sum is σ = 1000131450. Its totient is φ = 1000131448.

The previous prime is 1000131397. The next prime is 1000131493. The reversal of 1000131449 is 9441310001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988788025 + 11343424 = 31445^2 + 3368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000131449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000131049) 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, 500065724 + 500065725.

It is an arithmetic number, because the mean of its divisors is an integer number (500065725).

Almost surely, 2^1000131449 is an apocalyptic number.

It is an amenable number.

1000131449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000131449 is an equidigital number, since it uses as much as digits as its factorization.

1000131449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1000131449 is about 31624.8549245684. The cubic root of 1000131449 is about 1000.0438144136.

The spelling of 1000131449 in words is "one billion, one hundred thirty-one thousand, four hundred forty-nine".