20310011205 has 32 divisors (see below), whose sum is σ = 35606435328. Its totient is φ = 9803880000.

The previous prime is 20310011191. The next prime is 20310011213. The reversal of 20310011205 is 50211001302.

It is not a de Polignac number, because 20310011205 - 2⁵ = 20310011173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233671 + ... + 308580.

It is an arithmetic number, because the mean of its divisors is an integer number (1112701104).

Almost surely, 2^20310011205 is an apocalyptic number.

It is an amenable number.

20310011205 is a deficient number, since it is larger than the sum of its proper divisors (15296424123).

20310011205 is a wasteful number, since it uses less digits than its factorization.

20310011205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542497.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 20310011205 its reverse (50211001302), we get a palindrome (70521012507).

The spelling of 20310011205 in words is "twenty billion, three hundred ten million, eleven thousand, two hundred five".