305210020041 has 24 divisors (see below), whose sum is σ = 442335918024. Its totient is φ = 202792700160.

The previous prime is 305210020009. The next prime is 305210020091. The reversal of 305210020041 is 140020012503.

It can be written as a sum of positive squares in 4 ways, for example, as 167093730441 + 138116289600 = 408771^2 + 371640^2 .

It is not a de Polignac number, because 305210020041 - 2⁵ = 305210020009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305210019996 and 305210020023.

It is not an unprimeable number, because it can be changed into a prime (305210020091) 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, 3512775 + ... + 3598611.

It is an arithmetic number, because the mean of its divisors is an integer number (18430663251).

Almost surely, 2^305210020041 is an apocalyptic number.

It is an amenable number.

305210020041 is a deficient number, since it is larger than the sum of its proper divisors (137125897983).

305210020041 is a wasteful number, since it uses less digits than its factorization.

305210020041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87161 (or 87158 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 305210020041 its reverse (140020012503), we get a palindrome (445230032544).

The spelling of 305210020041 in words is "three hundred five billion, two hundred ten million, twenty thousand, forty-one".