1212232331 has 2 divisors, whose sum is σ = 1212232332. Its totient is φ = 1212232330.

The previous prime is 1212232303. The next prime is 1212232381. The reversal of 1212232331 is 1332322121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212232331 - 2²⁶ = 1145123467 is a prime.

It is a super-2 number, since 2×1212232331² = 2939014448643387122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1212232381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606116165 + 606116166.

It is an arithmetic number, because the mean of its divisors is an integer number (606116166).

Almost surely, 2^1212232331 is an apocalyptic number.

1212232331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212232331 is an equidigital number, since it uses as much as digits as its factorization.

1212232331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 1212232331 is about 34817.1269779688. The cubic root of 1212232331 is about 1066.2571446274.

Adding to 1212232331 its reverse (1332322121), we get a palindrome (2544554452).

The spelling of 1212232331 in words is "one billion, two hundred twelve million, two hundred thirty-two thousand, three hundred thirty-one".