313030003021 has 4 divisors (see below), whose sum is σ = 315314893692. Its totient is φ = 310745112352.

The previous prime is 313030003003. The next prime is 313030003063. The reversal of 313030003021 is 120300030313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120300030313 = 2267 ⋅53065739.

It can be written as a sum of positive squares in 2 ways, for example, as 254954304900 + 58075698121 = 504930^2 + 240989^2 .

It is a cyclic number.

It is not a de Polignac number, because 313030003021 - 2²³ = 313021614413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313030002986 and 313030003004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313030003921) 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, 1142445130 + ... + 1142445403.

It is an arithmetic number, because the mean of its divisors is an integer number (78828723423).

Almost surely, 2^313030003021 is an apocalyptic number.

It is an amenable number.

313030003021 is a deficient number, since it is larger than the sum of its proper divisors (2284890671).

313030003021 is a wasteful number, since it uses less digits than its factorization.

313030003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284890670.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 313030003021 its reverse (120300030313), we get a palindrome (433330033334).

The spelling of 313030003021 in words is "three hundred thirteen billion, thirty million, three thousand, twenty-one".