20124203031 has 10 divisors (see below), whose sum is σ = 30062081192. Its totient is φ = 13416135300.

The previous prime is 20124202993. The next prime is 20124203063. The reversal of 20124203031 is 13030242102.

It is not a de Polignac number, because 20124203031 - 2¹⁴ = 20124186647 is a prime.

It is a super-2 number, since 2×20124203031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20124202995 and 20124203013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124203081) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 124223395 + ... + 124223556.

Almost surely, 2^20124203031 is an apocalyptic number.

20124203031 is a deficient number, since it is larger than the sum of its proper divisors (9937878161).

20124203031 is an equidigital number, since it uses as much as digits as its factorization.

20124203031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248446963 (or 248446954 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20124203031 its reverse (13030242102), we get a palindrome (33154445133).

The spelling of 20124203031 in words is "twenty billion, one hundred twenty-four million, two hundred three thousand, thirty-one".