1171423823 has 2 divisors, whose sum is σ = 1171423824. Its totient is φ = 1171423822.

The previous prime is 1171423789. The next prime is 1171423837. The reversal of 1171423823 is 3283241711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1171423823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1171423823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171423523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585711911 + 585711912.

It is an arithmetic number, because the mean of its divisors is an integer number (585711912).

Almost surely, 2^1171423823 is an apocalyptic number.

1171423823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171423823 is an equidigital number, since it uses as much as digits as its factorization.

1171423823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 1171423823 is about 34226.0693477939. The cubic root of 1171423823 is about 1054.1555120658.

The spelling of 1171423823 in words is "one billion, one hundred seventy-one million, four hundred twenty-three thousand, eight hundred twenty-three".