305144031155 has 16 divisors (see below), whose sum is σ = 368328078144. Its totient is φ = 242681725440.

The previous prime is 305144031151. The next prime is 305144031169. The reversal of 305144031155 is 551130441503.

It is not a de Polignac number, because 305144031155 - 2² = 305144031151 is a prime.

It is a super-2 number, since 2×305144031155² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305144031151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527567 + ... + 942663.

It is an arithmetic number, because the mean of its divisors is an integer number (23020504884).

Almost surely, 2^305144031155 is an apocalyptic number.

305144031155 is a deficient number, since it is larger than the sum of its proper divisors (63184046989).

305144031155 is a wasteful number, since it uses less digits than its factorization.

305144031155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415966.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 305144031155 its reverse (551130441503), we get a palindrome (856274472658).

The spelling of 305144031155 in words is "three hundred five billion, one hundred forty-four million, thirty-one thousand, one hundred fifty-five".