1001220313 has 8 divisors (see below), whose sum is σ = 1005127200. Its totient is φ = 997321728.

The previous prime is 1001220247. The next prime is 1001220317. The reversal of 1001220313 is 3130221001.

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 1001220313 - 2²¹ = 999123161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001220293 and 1001220302.

It is not an unprimeable number, because it can be changed into a prime (1001220317) 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, 339198 + ... + 342136.

It is an arithmetic number, because the mean of its divisors is an integer number (125640900).

Almost surely, 2^1001220313 is an apocalyptic number.

It is an amenable number.

1001220313 is a deficient number, since it is larger than the sum of its proper divisors (3906887).

1001220313 is an equidigital number, since it uses as much as digits as its factorization.

1001220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1001220313 is about 31642.0655615274. The cubic root of 1001220313 is about 1000.4066056494.

Adding to 1001220313 its reverse (3130221001), we get a palindrome (4131441314).

The spelling of 1001220313 in words is "one billion, one million, two hundred twenty thousand, three hundred thirteen".