1331148173 has 2 divisors, whose sum is σ = 1331148174. Its totient is φ = 1331148172.

The previous prime is 1331148167. The next prime is 1331148191. The reversal of 1331148173 is 3718411331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1291180489 + 39967684 = 35933^2 + 6322^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331148173 - 2⁴ = 1331148157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331148163) 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, 665574086 + 665574087.

It is an arithmetic number, because the mean of its divisors is an integer number (665574087).

Almost surely, 2^1331148173 is an apocalyptic number.

It is an amenable number.

1331148173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331148173 is an equidigital number, since it uses as much as digits as its factorization.

1331148173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 1331148173 is about 36484.9033574162. The cubic root of 1331148173 is about 1100.0408174936.

The spelling of 1331148173 in words is "one billion, three hundred thirty-one million, one hundred forty-eight thousand, one hundred seventy-three".