313003121 has 4 divisors (see below), whose sum is σ = 316520100. Its totient is φ = 309486144.

The previous prime is 313003109. The next prime is 313003153. The reversal of 313003121 is 121300313.

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 64625521 + 248377600 = 8039^2 + 15760^2 .

It is a cyclic number.

It is not a de Polignac number, because 313003121 - 2¹⁰ = 313002097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313003096 and 313003105.

It is not an unprimeable number, because it can be changed into a prime (313003181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1758356 + ... + 1758533.

It is an arithmetic number, because the mean of its divisors is an integer number (79130025).

Almost surely, 2^313003121 is an apocalyptic number.

It is an amenable number.

313003121 is a deficient number, since it is larger than the sum of its proper divisors (3516979).

313003121 is an equidigital number, since it uses as much as digits as its factorization.

313003121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516978.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 313003121 is about 17691.8942174093. The cubic root of 313003121 is about 678.9683903490.

Adding to 313003121 its reverse (121300313), we get a palindrome (434303434).

It can be divided in two parts, 31300312 and 1, that added together give a palindrome (31300313).

The spelling of 313003121 in words is "three hundred thirteen million, three thousand, one hundred twenty-one".