1232136331 has 2 divisors, whose sum is σ = 1232136332. Its totient is φ = 1232136330.

The previous prime is 1232136329. The next prime is 1232136337. The reversal of 1232136331 is 1336312321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1232136331 - 2¹ = 1232136329 is a prime.

It is a super-2 number, since 2×1232136331² = 3036319876340283122, which contains 22 as substring.

Together with 1232136329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1232136296 and 1232136305.

It is not a weakly prime, because it can be changed into another prime (1232136337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616068165 + 616068166.

It is an arithmetic number, because the mean of its divisors is an integer number (616068166).

Almost surely, 2^1232136331 is an apocalyptic number.

1232136331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232136331 is an equidigital number, since it uses as much as digits as its factorization.

1232136331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 25.

The square root of 1232136331 is about 35101.7995407643. The cubic root of 1232136331 is about 1072.0612234261.

Adding to 1232136331 its reverse (1336312321), we get a palindrome (2568448652).

The spelling of 1232136331 in words is "one billion, two hundred thirty-two million, one hundred thirty-six thousand, three hundred thirty-one".