20030231223320 has 32 divisors (see below), whose sum is σ = 45070328106720. Its totient is φ = 8011682204160.

The previous prime is 20030231223203. The next prime is 20030231223329. The reversal of 20030231223320 is 2332213203002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030231223329) 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, 12029921 + ... + 13593360.

It is an arithmetic number, because the mean of its divisors is an integer number (1408447753335).

Almost surely, 2^{20030231223320} is an apocalyptic number.

20030231223320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20030231223320 is an abundant number, since it is smaller than the sum of its proper divisors (25040096883400).

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

20030231223320 is a wasteful number, since it uses less digits than its factorization.

20030231223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25642835 (or 25642831 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20030231223320 its reverse (2332213203002), we get a palindrome (22362444426322).

The spelling of 20030231223320 in words is "twenty trillion, thirty billion, two hundred thirty-one million, two hundred twenty-three thousand, three hundred twenty".