313213000103021 has 2 divisors, whose sum is σ = 313213000103022. Its totient is φ = 313213000103020.

The previous prime is 313213000102993. The next prime is 313213000103077. The reversal of 313213000103021 is 120301000312313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310119320142025 + 3093679960996 = 17610205^2 + 1758886^2 .

It is a cyclic number.

It is not a de Polignac number, because 313213000103021 - 2⁶ = 313213000102957 is a prime.

It is a super-2 number, since 2×313213000103021² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313213000102984 and 313213000103002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313213000103321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156606500051510 + 156606500051511.

It is an arithmetic number, because the mean of its divisors is an integer number (156606500051511).

Almost surely, 2^{313213000103021} is an apocalyptic number.

It is an amenable number.

313213000103021 is a deficient number, since it is larger than the sum of its proper divisors (1).

313213000103021 is an equidigital number, since it uses as much as digits as its factorization.

313213000103021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 313213000103021 its reverse (120301000312313), we get a palindrome (433514000415334).

The spelling of 313213000103021 in words is "three hundred thirteen trillion, two hundred thirteen billion, one hundred three thousand, twenty-one".