10311003221 has 4 divisors (see below), whose sum is σ = 10311232032. Its totient is φ = 10310774412.

The previous prime is 10311003119. The next prime is 10311003299. The reversal of 10311003221 is 12230011301.

10311003221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 12230011301 = 659 ⋅18558439.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10311003221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10311003196 and 10311003205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10311006221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21851 + ... + 145256.

It is an arithmetic number, because the mean of its divisors is an integer number (2577808008).

Almost surely, 2^10311003221 is an apocalyptic number.

It is an amenable number.

10311003221 is a deficient number, since it is larger than the sum of its proper divisors (228811).

10311003221 is an equidigital number, since it uses as much as digits as its factorization.

10311003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228810.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10311003221 its reverse (12230011301), we get a palindrome (22541014522).

The spelling of 10311003221 in words is "ten billion, three hundred eleven million, three thousand, two hundred twenty-one".