20203131031104 has 112 divisors (see below), whose sum is σ = 61100107342848. Its totient is φ = 5771407815168.

The previous prime is 20203131031103. The next prime is 20203131031159. The reversal of 20203131031104 is 40113013130202.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20203131031103) 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, 7309429 + ... + 9686795.

It is an arithmetic number, because the mean of its divisors is an integer number (545536672704).

Almost surely, 2^{20203131031104} is an apocalyptic number.

20203131031104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20203131031104 is an abundant number, since it is smaller than the sum of its proper divisors (40896976311744).

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

20203131031104 is a wasteful number, since it uses less digits than its factorization.

20203131031104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383712 (or 2383702 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20203131031104 its reverse (40113013130202), we get a palindrome (60316144161306).

The spelling of 20203131031104 in words is "twenty trillion, two hundred three billion, one hundred thirty-one million, thirty-one thousand, one hundred four".