20220313313 has 4 divisors (see below), whose sum is σ = 20232230340. Its totient is φ = 20208396288.

The previous prime is 20220313303. The next prime is 20220313327. The reversal of 20220313313 is 31331302202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31331302202 = 2 ⋅15665651101.

It can be written as a sum of positive squares in 2 ways, for example, as 17616456529 + 2603856784 = 132727^2 + 51028^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220313313 - 2³⁰ = 19146571489 is a prime.

It is a super-2 number, since 2×20220313313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20220313303) 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, 5955968 + ... + 5959361.

It is an arithmetic number, because the mean of its divisors is an integer number (5058057585).

Almost surely, 2^20220313313 is an apocalyptic number.

It is an amenable number.

20220313313 is a deficient number, since it is larger than the sum of its proper divisors (11917027).

20220313313 is a wasteful number, since it uses less digits than its factorization.

20220313313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11917026.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20220313313 its reverse (31331302202), we get a palindrome (51551615515).

The spelling of 20220313313 in words is "twenty billion, two hundred twenty million, three hundred thirteen thousand, three hundred thirteen".