313030100013221 has 4 divisors (see below), whose sum is σ = 313397075512332. Its totient is φ = 312663124514112.

The previous prime is 313030100013179. The next prime is 313030100013341. The reversal of 313030100013221 is 122310001030313.

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 43182785392321 + 269847314620900 = 6571361^2 + 16427030^2 .

It is a cyclic number.

It is not a de Polignac number, because 313030100013221 - 2⁶ = 313030100013157 is a prime.

It is a super-3 number, since 3×313030100013221³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313030100013193 and 313030100013202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313030106013221) 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, 183487748276 + ... + 183487749981.

It is an arithmetic number, because the mean of its divisors is an integer number (78349268878083).

Almost surely, 2^{313030100013221} is an apocalyptic number.

It is an amenable number.

313030100013221 is a deficient number, since it is larger than the sum of its proper divisors (366975499111).

313030100013221 is an equidigital number, since it uses as much as digits as its factorization.

313030100013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366975499110.

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

Adding to 313030100013221 its reverse (122310001030313), we get a palindrome (435340101043534).

The spelling of 313030100013221 in words is "three hundred thirteen trillion, thirty billion, one hundred million, thirteen thousand, two hundred twenty-one".