20313223212 has 24 divisors (see below), whose sum is σ = 48104948416. Its totient is φ = 6670013328.

The previous prime is 20313223169. The next prime is 20313223219. The reversal of 20313223212 is 21232231302.

It is a happy number.

It is a super-3 number, since 3×20313223212³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20313223219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12631798 + ... + 12633405.

Almost surely, 2^20313223212 is an apocalyptic number.

It is an amenable number.

20313223212 is an abundant number, since it is smaller than the sum of its proper divisors (27791725204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20313223212 is a wasteful number, since it uses less digits than its factorization.

20313223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25265277 (or 25265275 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20313223212 its reverse (21232231302), we get a palindrome (41545454514).

The spelling of 20313223212 in words is "twenty billion, three hundred thirteen million, two hundred twenty-three thousand, two hundred twelve".