1321235983 has 2 divisors, whose sum is σ = 1321235984. Its totient is φ = 1321235982.

The previous prime is 1321235963. The next prime is 1321236011. The reversal of 1321235983 is 3895321231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321235983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321235953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660617991 + 660617992.

It is an arithmetic number, because the mean of its divisors is an integer number (660617992).

Almost surely, 2^1321235983 is an apocalyptic number.

1321235983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321235983 is an equidigital number, since it uses as much as digits as its factorization.

1321235983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 1321235983 is about 36348.8099254982. The cubic root of 1321235983 is about 1097.3035838641.

The spelling of 1321235983 in words is "one billion, three hundred twenty-one million, two hundred thirty-five thousand, nine hundred eighty-three".