20203220312 has 32 divisors (see below), whose sum is σ = 41365036800. Its totient is φ = 9174333600.

The previous prime is 20203220299. The next prime is 20203220341. The reversal of 20203220312 is 21302230202.

It is a super-2 number, since 2×20203220312² (a number of 21 digits) contains 22 as substring.

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, 20612 + ... + 202067.

It is an arithmetic number, because the mean of its divisors is an integer number (1292657400).

Almost surely, 2^20203220312 is an apocalyptic number.

20203220312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20203220312 is an abundant number, since it is smaller than the sum of its proper divisors (21161816488).

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

20203220312 is a wasteful number, since it uses less digits than its factorization.

20203220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223727 (or 223723 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20203220312 its reverse (21302230202), we get a palindrome (41505450514).

The spelling of 20203220312 in words is "twenty billion, two hundred three million, two hundred twenty thousand, three hundred twelve".