101123663 has 4 divisors (see below), whose sum is σ = 105520368. Its totient is φ = 96726960.

The previous prime is 101123653. The next prime is 101123717. The reversal of 101123663 is 366321101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 101123663 - 2⁴ = 101123647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 4396681 = 101123663 / (1 + 0 + 1 + 1 + 2 + 3 + 6 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101123653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198318 + ... + 2198363.

It is an arithmetic number, because the mean of its divisors is an integer number (26380092).

Almost surely, 2^101123663 is an apocalyptic number.

101123663 is a deficient number, since it is larger than the sum of its proper divisors (4396705).

101123663 is an equidigital number, since it uses as much as digits as its factorization.

101123663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396704.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 101123663 is about 10056.0262032276. The cubic root of 101123663 is about 465.8909391914.

Adding to 101123663 its reverse (366321101), we get a palindrome (467444764).

The spelling of 101123663 in words is "one hundred one million, one hundred twenty-three thousand, six hundred sixty-three".