1231049933 has 2 divisors, whose sum is σ = 1231049934. Its totient is φ = 1231049932.

The previous prime is 1231049899. The next prime is 1231049947. The reversal of 1231049933 is 3399401321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1227941764 + 3108169 = 35042^2 + 1763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231049933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231049893 and 1231049902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231049983) 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, 615524966 + 615524967.

It is an arithmetic number, because the mean of its divisors is an integer number (615524967).

Almost surely, 2^1231049933 is an apocalyptic number.

It is an amenable number.

1231049933 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231049933 is an equidigital number, since it uses as much as digits as its factorization.

1231049933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 1231049933 is about 35086.3211665173. The cubic root of 1231049933 is about 1071.7460451958.

The spelling of 1231049933 in words is "one billion, two hundred thirty-one million, forty-nine thousand, nine hundred thirty-three".