1232144161 has 4 divisors (see below), whose sum is σ = 1241138052. Its totient is φ = 1223150272.

The previous prime is 1232144143. The next prime is 1232144209. The reversal of 1232144161 is 1614412321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1614412321 = 79 ⋅20435599.

It can be written as a sum of positive squares in 2 ways, for example, as 844251136 + 387893025 = 29056^2 + 19695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232144161 - 2⁷ = 1232144033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232144101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4496740 + ... + 4497013.

It is an arithmetic number, because the mean of its divisors is an integer number (310284513).

Almost surely, 2^1232144161 is an apocalyptic number.

It is an amenable number.

1232144161 is a deficient number, since it is larger than the sum of its proper divisors (8993891).

1232144161 is an equidigital number, since it uses as much as digits as its factorization.

1232144161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8993890.

The product of its digits is 1152, while the sum is 25.

The square root of 1232144161 is about 35101.9110733305. The cubic root of 1232144161 is about 1072.0634943387.

Adding to 1232144161 its reverse (1614412321), we get a palindrome (2846556482).

The spelling of 1232144161 in words is "one billion, two hundred thirty-two million, one hundred forty-four thousand, one hundred sixty-one".