253123221304 has 32 divisors (see below), whose sum is σ = 498206661120. Its totient is φ = 120334013536.

The previous prime is 253123221287. The next prime is 253123221359. The reversal of 253123221304 is 403122321352.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4088044 + ... + 4149499.

It is an arithmetic number, because the mean of its divisors is an integer number (15568958160).

Almost surely, 2^253123221304 is an apocalyptic number.

It is an amenable number.

253123221304 is a deficient number, since it is larger than the sum of its proper divisors (245083439816).

253123221304 is a wasteful number, since it uses less digits than its factorization.

253123221304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237739 (or 8237735 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 253123221304 its reverse (403122321352), we get a palindrome (656245542656).

The spelling of 253123221304 in words is "two hundred fifty-three billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred four".