1166311423 has 2 divisors, whose sum is σ = 1166311424. Its totient is φ = 1166311422.

The previous prime is 1166311417. The next prime is 1166311451. The reversal of 1166311423 is 3241136611.

It is an a-pointer prime, because the next prime (1166311451) can be obtained adding 1166311423 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (3241136611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166311423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166311391 and 1166311400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166311463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583155711 + 583155712.

It is an arithmetic number, because the mean of its divisors is an integer number (583155712).

Almost surely, 2^1166311423 is an apocalyptic number.

1166311423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166311423 is an equidigital number, since it uses as much as digits as its factorization.

1166311423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 1166311423 is about 34151.3019224743. The cubic root of 1166311423 is about 1052.6197389176.

The spelling of 1166311423 in words is "one billion, one hundred sixty-six million, three hundred eleven thousand, four hundred twenty-three".