20311134504 has 64 divisors (see below), whose sum is σ = 50949259200. Its totient is φ = 6747569664.

The previous prime is 20311134491. The next prime is 20311134541. The reversal of 20311134504 is 40543111302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 15904714 + ... + 15905990.

It is an arithmetic number, because the mean of its divisors is an integer number (796082175).

Almost surely, 2^20311134504 is an apocalyptic number.

20311134504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20311134504 is an abundant number, since it is smaller than the sum of its proper divisors (30638124696).

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

20311134504 is a wasteful number, since it uses less digits than its factorization.

20311134504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002 (or 2998 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 20311134504 its reverse (40543111302), we get a palindrome (60854245806).

The spelling of 20311134504 in words is "twenty billion, three hundred eleven million, one hundred thirty-four thousand, five hundred four".