1131298173 has 6 divisors (see below), whose sum is σ = 1634097374. Its totient is φ = 754198776.

The previous prime is 1131298169. The next prime is 1131298177. The reversal of 1131298173 is 3718921311.

It is an interprime number because it is at equal distance from previous prime (1131298169) and next prime (1131298177).

It can be written as a sum of positive squares in only one way, i.e., 1060283844 + 71014329 = 32562^2 + 8427^2 .

It is not a de Polignac number, because 1131298173 - 2² = 1131298169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131298177) 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 in 5 ways as a sum of consecutive naturals, for example, 62849890 + ... + 62849907.

Almost surely, 2^1131298173 is an apocalyptic number.

It is an amenable number.

1131298173 is a deficient number, since it is larger than the sum of its proper divisors (502799201).

1131298173 is a wasteful number, since it uses less digits than its factorization.

1131298173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125699803 (or 125699800 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 1131298173 is about 33634.7762442386. The cubic root of 1131298173 is about 1041.9791494410.

The spelling of 1131298173 in words is "one billion, one hundred thirty-one million, two hundred ninety-eight thousand, one hundred seventy-three".