20310011197 has 16 divisors (see below), whose sum is σ = 24852977280. Its totient is φ = 16200442368.

The previous prime is 20310011191. The next prime is 20310011213. The reversal of 20310011197 is 79111001302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20310011197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310011191) 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, 948243 + ... + 969424.

It is an arithmetic number, because the mean of its divisors is an integer number (1553311080).

Almost surely, 2^20310011197 is an apocalyptic number.

It is an amenable number.

20310011197 is a deficient number, since it is larger than the sum of its proper divisors (4542966083).

20310011197 is a wasteful number, since it uses less digits than its factorization.

20310011197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917780.

The product of its (nonzero) digits is 378, while the sum is 25.

Adding to 20310011197 its reverse (79111001302), we get a palindrome (99421012499).

The spelling of 20310011197 in words is "twenty billion, three hundred ten million, eleven thousand, one hundred ninety-seven".