30501043205 has 4 divisors (see below), whose sum is σ = 36601251852. Its totient is φ = 24400834560.

The previous prime is 30501043201. The next prime is 30501043211. The reversal of 30501043205 is 50234010503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15510958849 + 14990084356 = 124543^2 + 122434^2 .

It is not a de Polignac number, because 30501043205 - 2² = 30501043201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30501043201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050104316 + ... + 3050104325.

It is an arithmetic number, because the mean of its divisors is an integer number (9150312963).

Almost surely, 2^30501043205 is an apocalyptic number.

It is an amenable number.

30501043205 is a deficient number, since it is larger than the sum of its proper divisors (6100208647).

30501043205 is an equidigital number, since it uses as much as digits as its factorization.

30501043205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100208646.

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 30501043205 its reverse (50234010503), we get a palindrome (80735053708).

The spelling of 30501043205 in words is "thirty billion, five hundred one million, forty-three thousand, two hundred five".