20311144223204 has 12 divisors (see below), whose sum is σ = 35651887596528. Its totient is φ = 10124890624200.

The previous prime is 20311144223173. The next prime is 20311144223233. The reversal of 20311144223204 is 40232244111302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7670370362 + ... + 7670373009.

It is an arithmetic number, because the mean of its divisors is an integer number (2970990633044).

Almost surely, 2^{20311144223204} is an apocalyptic number.

It is an amenable number.

20311144223204 is a deficient number, since it is larger than the sum of its proper divisors (15340743373324).

20311144223204 is a wasteful number, since it uses less digits than its factorization.

20311144223204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340743706 (or 15340743704 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 20311144223204 its reverse (40232244111302), we get a palindrome (60543388334506).

The spelling of 20311144223204 in words is "twenty trillion, three hundred eleven billion, one hundred forty-four million, two hundred twenty-three thousand, two hundred four".