1173231445 has 4 divisors (see below), whose sum is σ = 1407877740. Its totient is φ = 938585152.

The previous prime is 1173231431. The next prime is 1173231467. The reversal of 1173231445 is 5441323711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 881436721 + 291794724 = 29689^2 + 17082^2 .

It is a cyclic number.

It is not a de Polignac number, because 1173231445 - 2⁷ = 1173231317 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 117323140 + ... + 117323149.

It is an arithmetic number, because the mean of its divisors is an integer number (351969435).

Almost surely, 2^1173231445 is an apocalyptic number.

It is an amenable number.

1173231445 is a deficient number, since it is larger than the sum of its proper divisors (234646295).

1173231445 is an equidigital number, since it uses as much as digits as its factorization.

1173231445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234646294.

The product of its digits is 10080, while the sum is 31.

The square root of 1173231445 is about 34252.4662615701. The cubic root of 1173231445 is about 1054.6974552308.

The spelling of 1173231445 in words is "one billion, one hundred seventy-three million, two hundred thirty-one thousand, four hundred forty-five".