20312203313 has 16 divisors (see below), whose sum is σ = 22040714304. Its totient is φ = 18643376640.

The previous prime is 20312203291. The next prime is 20312203393. The reversal of 20312203313 is 31330221302.

It is a cyclic number.

It is not a de Polignac number, because 20312203313 - 2²² = 20308009009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312203393) 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, 2328506 + ... + 2337212.

It is an arithmetic number, because the mean of its divisors is an integer number (1377544644).

Almost surely, 2^20312203313 is an apocalyptic number.

It is an amenable number.

20312203313 is a deficient number, since it is larger than the sum of its proper divisors (1728510991).

20312203313 is a wasteful number, since it uses less digits than its factorization.

20312203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12112.

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

Adding to 20312203313 its reverse (31330221302), we get a palindrome (51642424615).

The spelling of 20312203313 in words is "twenty billion, three hundred twelve million, two hundred three thousand, three hundred thirteen".