3130310221 has 8 divisors (see below), whose sum is σ = 3241660824. Its totient is φ = 3020896320.

The previous prime is 3130310213. The next prime is 3130310237. The reversal of 3130310221 is 1220130313.

It can be written as a sum of positive squares in 4 ways, for example, as 16112196 + 3114198025 = 4014^2 + 55805^2 .

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 3130310221 - 2³ = 3130310213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3130310195 and 3130310204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130310621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480886 + ... + 487351.

It is an arithmetic number, because the mean of its divisors is an integer number (405207603).

Almost surely, 2^3130310221 is an apocalyptic number.

It is an amenable number.

3130310221 is a deficient number, since it is larger than the sum of its proper divisors (111350603).

3130310221 is an equidigital number, since it uses as much as digits as its factorization.

3130310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968351.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3130310221 is about 55949.1753379797. The cubic root of 3130310221 is about 1462.8365167720.

Adding to 3130310221 its reverse (1220130313), we get a palindrome (4350440534).

The spelling of 3130310221 in words is "three billion, one hundred thirty million, three hundred ten thousand, two hundred twenty-one".