1104231621 has 4 divisors (see below), whose sum is σ = 1472308832. Its totient is φ = 736154412.

The previous prime is 1104231613. The next prime is 1104231629. The reversal of 1104231621 is 1261324011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1261324011 = 3 ⋅420441337.

It is an interprime number because it is at equal distance from previous prime (1104231613) and next prime (1104231629).

It is not a de Polignac number, because 1104231621 - 2³ = 1104231613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1104231629) 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, 184038601 + ... + 184038606.

It is an arithmetic number, because the mean of its divisors is an integer number (368077208).

Almost surely, 2^1104231621 is an apocalyptic number.

It is an amenable number.

1104231621 is a deficient number, since it is larger than the sum of its proper divisors (368077211).

1104231621 is an equidigital number, since it uses as much as digits as its factorization.

1104231621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368077210.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1104231621 is about 33229.9807553360. The cubic root of 1104231621 is about 1033.6021241678.

Adding to 1104231621 its reverse (1261324011), we get a palindrome (2365555632).

The spelling of 1104231621 in words is "one billion, one hundred four million, two hundred thirty-one thousand, six hundred twenty-one".