3103040221 has 4 divisors (see below), whose sum is σ = 3103533952. Its totient is φ = 3102546492.

The previous prime is 3103040203. The next prime is 3103040249. The reversal of 3103040221 is 1220403013.

It is a happy number.

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: 1220403013 = 20201 ⋅60413.

It is a cyclic number.

It is not a de Polignac number, because 3103040221 - 2⁷ = 3103040093 is a prime.

It is a super-2 number, since 2×3103040221² = 19257717226287457682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3103040195 and 3103040204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3103040021) 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, 237315 + ... + 250048.

It is an arithmetic number, because the mean of its divisors is an integer number (775883488).

Almost surely, 2^3103040221 is an apocalyptic number.

It is an amenable number.

3103040221 is a deficient number, since it is larger than the sum of its proper divisors (493731).

3103040221 is an equidigital number, since it uses as much as digits as its factorization.

3103040221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493730.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3103040221 is about 55704.9389282494. The cubic root of 3103040221 is about 1458.5762408882.

Adding to 3103040221 its reverse (1220403013), we get a palindrome (4323443234).

The spelling of 3103040221 in words is "three billion, one hundred three million, forty thousand, two hundred twenty-one".