20220320312 has 8 divisors (see below), whose sum is σ = 37913100600. Its totient is φ = 10110160152.

The previous prime is 20220320249. The next prime is 20220320357. The reversal of 20220320312 is 21302302202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20220320312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1263770012 + ... + 1263770027.

It is an arithmetic number, because the mean of its divisors is an integer number (4739137575).

Almost surely, 2^20220320312 is an apocalyptic number.

It is an amenable number.

20220320312 is a deficient number, since it is larger than the sum of its proper divisors (17692780288).

20220320312 is a wasteful number, since it uses less digits than its factorization.

20220320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527540045 (or 2527540041 counting only the distinct ones).

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

Adding to 20220320312 its reverse (21302302202), we get a palindrome (41522622514).

The spelling of 20220320312 in words is "twenty billion, two hundred twenty million, three hundred twenty thousand, three hundred twelve".