305143701233252 has 72 divisors (see below), whose sum is σ = 664003049109120. Its totient is φ = 122038989663360.

The previous prime is 305143701233251. The next prime is 305143701233363. The reversal of 305143701233252 is 252332107341503.

It is a super-2 number, since 2×305143701233252² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (305143701233251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 825295352 + ... + 825665007.

It is an arithmetic number, because the mean of its divisors is an integer number (9222264570960).

Almost surely, 2^{305143701233252} is an apocalyptic number.

It is an amenable number.

305143701233252 is an abundant number, since it is smaller than the sum of its proper divisors (358859347875868).

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

305143701233252 is a wasteful number, since it uses less digits than its factorization.

305143701233252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650960441 (or 1650960432 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 41.

Adding to 305143701233252 its reverse (252332107341503), we get a palindrome (557475808574755).

The spelling of 305143701233252 in words is "three hundred five trillion, one hundred forty-three billion, seven hundred one million, two hundred thirty-three thousand, two hundred fifty-two".