1233009961 has 2 divisors, whose sum is σ = 1233009962. Its totient is φ = 1233009960.

The previous prime is 1233009937. The next prime is 1233010057. The reversal of 1233009961 is 1699003321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1003305625 + 229704336 = 31675^2 + 15156^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233009961 - 2⁵ = 1233009929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1233009761) 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 as a sum of consecutive naturals, namely, 616504980 + 616504981.

It is an arithmetic number, because the mean of its divisors is an integer number (616504981).

Almost surely, 2^1233009961 is an apocalyptic number.

It is an amenable number.

1233009961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233009961 is an equidigital number, since it uses as much as digits as its factorization.

1233009961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 1233009961 is about 35114.2415694829. The cubic root of 1233009961 is about 1072.3145405179.

The spelling of 1233009961 in words is "one billion, two hundred thirty-three million, nine thousand, nine hundred sixty-one".