1031311049 has 2 divisors, whose sum is σ = 1031311050. Its totient is φ = 1031311048.

The previous prime is 1031311037. The next prime is 1031311063. The reversal of 1031311049 is 9401131301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545549449 + 485761600 = 23357^2 + 22040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031311049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031311009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515655524 + 515655525.

It is an arithmetic number, because the mean of its divisors is an integer number (515655525).

Almost surely, 2^1031311049 is an apocalyptic number.

It is an amenable number.

1031311049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031311049 is an equidigital number, since it uses as much as digits as its factorization.

1031311049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1031311049 is about 32114.0319642364. The cubic root of 1031311049 is about 1010.3299412197.

The spelling of 1031311049 in words is "one billion, thirty-one million, three hundred eleven thousand, forty-nine".