104231021 has 6 divisors (see below), whose sum is σ = 107702766. Its totient is φ = 100867800.

The previous prime is 104231003. The next prime is 104231033. The reversal of 104231021 is 120132401.

It can be written as a sum of positive squares in only one way, i.e., 69538921 + 34692100 = 8339^2 + 5890^2 .

It is not a de Polignac number, because 104231021 - 2¹⁴ = 104214637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 104230987 and 104231005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104231081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53270 + ... + 55191.

It is an arithmetic number, because the mean of its divisors is an integer number (17950461).

Almost surely, 2^104231021 is an apocalyptic number.

It is an amenable number.

104231021 is a deficient number, since it is larger than the sum of its proper divisors (3471745).

104231021 is an equidigital number, since it uses as much as digits as its factorization.

104231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108523 (or 108492 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 104231021 is about 10209.3594803984. The cubic root of 104231021 is about 470.6148900873.

Adding to 104231021 its reverse (120132401), we get a palindrome (224363422).

The spelling of 104231021 in words is "one hundred four million, two hundred thirty-one thousand, twenty-one".