1223434300 has 72 divisors (see below), whose sum is σ = 2943842832. Its totient is φ = 437568000.

The previous prime is 1223434259. The next prime is 1223434319. The reversal of 1223434300 is 34343221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57984 + ... + 76216.

It is an arithmetic number, because the mean of its divisors is an integer number (40886706).

Almost surely, 2^1223434300 is an apocalyptic number.

1223434300 is a gapful number since it is divisible by the number (10) 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 1223434300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471921416).

1223434300 is an abundant number, since it is smaller than the sum of its proper divisors (1720408532).

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

1223434300 is a wasteful number, since it uses less digits than its factorization.

1223434300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18319 (or 18312 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1223434300 is about 34977.6257055850. The cubic root of 1223434300 is about 1069.5314278731.

Adding to 1223434300 its reverse (34343221), we get a palindrome (1257777521).

The spelling of 1223434300 in words is "one billion, two hundred twenty-three million, four hundred thirty-four thousand, three hundred".