20320030361 has 4 divisors (see below), whose sum is σ = 20321163300. Its totient is φ = 20318897424.

The previous prime is 20320030273. The next prime is 20320030441. The reversal of 20320030361 is 16303002302.

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 18889753600 + 1430276761 = 137440^2 + 37819^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320030361 - 2²⁶ = 20252921497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320000361) 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, 539126 + ... + 575583.

It is an arithmetic number, because the mean of its divisors is an integer number (5080290825).

Almost surely, 2^20320030361 is an apocalyptic number.

It is an amenable number.

20320030361 is a deficient number, since it is larger than the sum of its proper divisors (1132939).

20320030361 is a wasteful number, since it uses less digits than its factorization.

20320030361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132938.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20320030361 its reverse (16303002302), we get a palindrome (36623032663).

The spelling of 20320030361 in words is "twenty billion, three hundred twenty million, thirty thousand, three hundred sixty-one".