3130221313 has 4 divisors (see below), whose sum is σ = 3130919428. Its totient is φ = 3129523200.

The previous prime is 3130221293. The next prime is 3130221337. The reversal of 3130221313 is 3131220313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 365880384 + 2764340929 = 19128^2 + 52577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3130221313 is a prime.

It is a super-3 number, since 3×3130221313³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3130224313) 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, 342288 + ... + 351313.

It is an arithmetic number, because the mean of its divisors is an integer number (782729857).

Almost surely, 2^3130221313 is an apocalyptic number.

It is an amenable number.

3130221313 is a deficient number, since it is larger than the sum of its proper divisors (698115).

3130221313 is an equidigital number, since it uses as much as digits as its factorization.

3130221313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698114.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 3130221313 is about 55948.3807897959. The cubic root of 3130221313 is about 1462.8226673353.

Adding to 3130221313 its reverse (3131220313), we get a palindrome (6261441626).

The spelling of 3130221313 in words is "three billion, one hundred thirty million, two hundred twenty-one thousand, three hundred thirteen".