20323513212 has 24 divisors (see below), whose sum is σ = 47442133200. Its totient is φ = 6771561216.

The previous prime is 20323513183. The next prime is 20323513271. The reversal of 20323513212 is 21231532302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339037 + ... + 394452.

It is an arithmetic number, because the mean of its divisors is an integer number (1976755550).

Almost surely, 2^20323513212 is an apocalyptic number.

It is an amenable number.

20323513212 is an abundant number, since it is smaller than the sum of its proper divisors (27118619988).

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

20323513212 is a wasteful number, since it uses less digits than its factorization.

20323513212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735805 (or 735803 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The spelling of 20323513212 in words is "twenty billion, three hundred twenty-three million, five hundred thirteen thousand, two hundred twelve".