223403312442 has 128 divisors (see below), whose sum is σ = 476171136000. Its totient is φ = 69771215360.

The previous prime is 223403312437. The next prime is 223403312443. The reversal of 223403312442 is 244213304322.

It is not an unprimeable number, because it can be changed into a prime (223403312443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 230075017 + ... + 230075987.

It is an arithmetic number, because the mean of its divisors is an integer number (3720087000).

Almost surely, 2^223403312442 is an apocalyptic number.

223403312442 is an abundant number, since it is smaller than the sum of its proper divisors (252767823558).

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

223403312442 is a wasteful number, since it uses less digits than its factorization.

223403312442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 223403312442 its reverse (244213304322), we get a palindrome (467616616764).

The spelling of 223403312442 in words is "two hundred twenty-three billion, four hundred three million, three hundred twelve thousand, four hundred forty-two".