20131231103000 has 32 divisors (see below), whose sum is σ = 47107080783360. Its totient is φ = 8052492440800.

The previous prime is 20131231102889. The next prime is 20131231103003. The reversal of 20131231103000 is 30113213102.

It is a self number, because there is not a number n which added to its sum of digits gives 20131231103000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131231103003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10065614552 + ... + 10065616551.

It is an arithmetic number, because the mean of its divisors is an integer number (1472096274480).

Almost surely, 2^{20131231103000} is an apocalyptic number.

20131231103000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131231103000 is an abundant number, since it is smaller than the sum of its proper divisors (26975849680360).

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

20131231103000 is a wasteful number, since it uses less digits than its factorization.

20131231103000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20131231124 (or 20131231110 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20131231103000 its reverse (30113213102), we get a palindrome (20161344316102).

The spelling of 20131231103000 in words is "twenty trillion, one hundred thirty-one billion, two hundred thirty-one million, one hundred three thousand".