20031103124 has 6 divisors (see below), whose sum is σ = 35054430474. Its totient is φ = 10015551560.

The previous prime is 20031103109. The next prime is 20031103171. The reversal of 20031103124 is 42130113002.

It can be written as a sum of positive squares in only one way, i.e., 10895184400 + 9135918724 = 104380^2 + 95582^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2503887887 + ... + 2503887894.

It is an arithmetic number, because the mean of its divisors is an integer number (5842405079).

Almost surely, 2^20031103124 is an apocalyptic number.

It is an amenable number.

20031103124 is a deficient number, since it is larger than the sum of its proper divisors (15023327350).

20031103124 is a wasteful number, since it uses less digits than its factorization.

20031103124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007775785 (or 5007775783 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20031103124 its reverse (42130113002), we get a palindrome (62161216126).

The spelling of 20031103124 in words is "twenty billion, thirty-one million, one hundred three thousand, one hundred twenty-four".