20123310213 has 36 divisors (see below), whose sum is σ = 31173131808. Its totient is φ = 12485262240.

The previous prime is 20123310211. The next prime is 20123310253. The reversal of 20123310213 is 31201332102.

20123310213 is a `hidden beast` number, since 20 + 123 + 310 + 213 = 666.

It is not a de Polignac number, because 20123310213 - 2¹ = 20123310211 is a prime.

It is a super-2 number, since 2×20123310213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123310211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 247878 + ... + 318888.

It is an arithmetic number, because the mean of its divisors is an integer number (865920328).

Almost surely, 2^20123310213 is an apocalyptic number.

20123310213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20123310213 is a deficient number, since it is larger than the sum of its proper divisors (11049821595).

20123310213 is a wasteful number, since it uses less digits than its factorization.

20123310213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71114 (or 71074 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20123310213 its reverse (31201332102), we get a palindrome (51324642315).

The spelling of 20123310213 in words is "twenty billion, one hundred twenty-three million, three hundred ten thousand, two hundred thirteen".