1232201131 has 4 divisors (see below), whose sum is σ = 1408229872. Its totient is φ = 1056172392.

The previous prime is 1232201119. The next prime is 1232201137. The reversal of 1232201131 is 1311022321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311022321 = 7 ⋅187288903.

It is a cyclic number.

It is not a de Polignac number, because 1232201131 - 2⁵ = 1232201099 is a prime.

It is a super-2 number, since 2×1232201131² = 3036639254475358322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1232201137) 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 in 3 ways as a sum of consecutive naturals, for example, 88014360 + ... + 88014373.

It is an arithmetic number, because the mean of its divisors is an integer number (352057468).

Almost surely, 2^1232201131 is an apocalyptic number.

1232201131 is a deficient number, since it is larger than the sum of its proper divisors (176028741).

1232201131 is an equidigital number, since it uses as much as digits as its factorization.

1232201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176028740.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1232201131 is about 35102.7225582290. The cubic root of 1232201131 is about 1072.0800168956.

Adding to 1232201131 its reverse (1311022321), we get a palindrome (2543223452).

The spelling of 1232201131 in words is "one billion, two hundred thirty-two million, two hundred one thousand, one hundred thirty-one".