223131232020 has 24 divisors (see below), whose sum is σ = 624767449824. Its totient is φ = 59501661856.

The previous prime is 223131232001. The next prime is 223131232021. The reversal of 223131232020 is 20232131322.

It is a happy number.

It is a super-3 number, since 3×223131232020³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223131232021) 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, 1859426874 + ... + 1859426993.

It is an arithmetic number, because the mean of its divisors is an integer number (26031977076).

Almost surely, 2^223131232020 is an apocalyptic number.

223131232020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223131232020 is an abundant number, since it is smaller than the sum of its proper divisors (401636217804).

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

223131232020 is a wasteful number, since it uses less digits than its factorization.

223131232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718853879 (or 3718853877 counting only the distinct ones).

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

Adding to 223131232020 its reverse (20232131322), we get a palindrome (243363363342).

The spelling of 223131232020 in words is "two hundred twenty-three billion, one hundred thirty-one million, two hundred thirty-two thousand, twenty".