100521023 has 8 divisors (see below), whose sum is σ = 101317392. Its totient is φ = 99727936.

The previous prime is 100521013. The next prime is 100521037. The reversal of 100521023 is 320125001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100521023 - 2⁴ = 100521007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100520989 and 100521007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100521013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121136 + ... + 121962.

It is an arithmetic number, because the mean of its divisors is an integer number (12664674).

Almost surely, 2^100521023 is an apocalyptic number.

100521023 is a deficient number, since it is larger than the sum of its proper divisors (796369).

100521023 is an equidigital number, since it uses as much as digits as its factorization.

100521023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 100521023 is about 10026.0173049920. The cubic root of 100521023 is about 464.9636122141.

Adding to 100521023 its reverse (320125001), we get a palindrome (420646024).

The spelling of 100521023 in words is "one hundred million, five hundred twenty-one thousand, twenty-three".