1223543983 has 2 divisors, whose sum is σ = 1223543984. Its totient is φ = 1223543982.

The previous prime is 1223543977. The next prime is 1223544001. The reversal of 1223543983 is 3893453221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223543983 - 2⁹ = 1223543471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223543383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611771991 + 611771992.

It is an arithmetic number, because the mean of its divisors is an integer number (611771992).

Almost surely, 2^1223543983 is an apocalyptic number.

1223543983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223543983 is an equidigital number, since it uses as much as digits as its factorization.

1223543983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 1223543983 is about 34979.1935727512. The cubic root of 1223543983 is about 1069.5633886985.

The spelling of 1223543983 in words is "one billion, two hundred twenty-three million, five hundred forty-three thousand, nine hundred eighty-three".