1233212131 has 2 divisors, whose sum is σ = 1233212132. Its totient is φ = 1233212130.

The previous prime is 1233212069. The next prime is 1233212171. The reversal of 1233212131 is 1312123321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1233212131 - 2¹⁹ = 1232687843 is a prime.

It is a super-2 number, since 2×1233212131² = 3041624320091122322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1233212099 and 1233212108.

It is not a weakly prime, because it can be changed into another prime (1233212171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616606065 + 616606066.

It is an arithmetic number, because the mean of its divisors is an integer number (616606066).

Almost surely, 2^1233212131 is an apocalyptic number.

1233212131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233212131 is an equidigital number, since it uses as much as digits as its factorization.

1233212131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 1233212131 is about 35117.1201979889. The cubic root of 1233212131 is about 1072.3731445276.

Adding to 1233212131 its reverse (1312123321), we get a palindrome (2545335452).

The spelling of 1233212131 in words is "one billion, two hundred thirty-three million, two hundred twelve thousand, one hundred thirty-one".