11171623 has 2 divisors, whose sum is σ = 11171624. Its totient is φ = 11171622.

The previous prime is 11171621. The next prime is 11171659. The reversal of 11171623 is 32617111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11171623 - 2¹ = 11171621 is a prime.

Together with 11171621, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11171594 and 11171603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11171621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5585811 + 5585812.

It is an arithmetic number, because the mean of its divisors is an integer number (5585812).

Almost surely, 2^11171623 is an apocalyptic number.

11171623 is a deficient number, since it is larger than the sum of its proper divisors (1).

11171623 is an equidigital number, since it uses as much as digits as its factorization.

11171623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 22.

The square root of 11171623 is about 3342.3977920050. The cubic root of 11171623 is about 223.5486700574.

Adding to 11171623 its reverse (32617111), we get a palindrome (43788734).

The spelling of 11171623 in words is "eleven million, one hundred seventy-one thousand, six hundred twenty-three".