100011523 has 4 divisors (see below), whose sum is σ = 101420208. Its totient is φ = 98602840.

The previous prime is 100011491. The next prime is 100011547. The reversal of 100011523 is 325110001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325110001 = 59 ⋅5510339.

It is a cyclic number.

It is not a de Polignac number, because 100011523 - 2⁵ = 100011491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100011623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704236 + ... + 704377.

It is an arithmetic number, because the mean of its divisors is an integer number (25355052).

Almost surely, 2^100011523 is an apocalyptic number.

100011523 is a deficient number, since it is larger than the sum of its proper divisors (1408685).

100011523 is an equidigital number, since it uses as much as digits as its factorization.

100011523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408684.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 100011523 is about 10000.5761334035. The cubic root of 100011523 is about 464.1767110192.

Adding to 100011523 its reverse (325110001), we get a palindrome (425121524).

The spelling of 100011523 in words is "one hundred million, eleven thousand, five hundred twenty-three".