223143500 has 48 divisors (see below), whose sum is σ = 494693472. Its totient is φ = 87912000.

The previous prime is 223143499. The next prime is 223143517. The reversal of 223143500 is 5341322.

It is a happy number.

223143500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223143500³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30170 + ... + 36830.

It is an arithmetic number, because the mean of its divisors is an integer number (10306114).

Almost surely, 2^223143500 is an apocalyptic number.

223143500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223143500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247346736).

223143500 is an abundant number, since it is smaller than the sum of its proper divisors (271549972).

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

223143500 is a wasteful number, since it uses less digits than its factorization.

223143500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747 (or 6735 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 223143500 is about 14937.9884857366. The cubic root of 223143500 is about 606.5427466305.

Adding to 223143500 its reverse (5341322), we get a palindrome (228484822).

The spelling of 223143500 in words is "two hundred twenty-three million, one hundred forty-three thousand, five hundred".