20311233100404 has 48 divisors (see below), whose sum is σ = 47865716441088. Its totient is φ = 6702897505248.

The previous prime is 20311233100397. The next prime is 20311233100453. The reversal of 20311233100404 is 40400133211302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2474829 + ... + 6837195.

It is an arithmetic number, because the mean of its divisors is an integer number (997202425856).

Almost surely, 2^{20311233100404} is an apocalyptic number.

It is an amenable number.

20311233100404 is an abundant number, since it is smaller than the sum of its proper divisors (27554483340684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311233100404 is a wasteful number, since it uses less digits than its factorization.

20311233100404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366244 (or 4366242 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20311233100404 its reverse (40400133211302), we get a palindrome (60711366311706).

The spelling of 20311233100404 in words is "twenty trillion, three hundred eleven billion, two hundred thirty-three million, one hundred thousand, four hundred four".