20124103431 has 16 divisors (see below), whose sum is σ = 27743482368. Its totient is φ = 12966513600.

The previous prime is 20124103387. The next prime is 20124103459. The reversal of 20124103431 is 13430142102.

It is not a de Polignac number, because 20124103431 - 2⁶ = 20124103367 is a prime.

It is a super-2 number, since 2×20124103431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20124103398 and 20124103407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124104431) 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, 751375 + ... + 777696.

It is an arithmetic number, because the mean of its divisors is an integer number (1733967648).

Almost surely, 2^20124103431 is an apocalyptic number.

20124103431 is a deficient number, since it is larger than the sum of its proper divisors (7619378937).

20124103431 is a wasteful number, since it uses less digits than its factorization.

20124103431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529222.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20124103431 its reverse (13430142102), we get a palindrome (33554245533).

The spelling of 20124103431 in words is "twenty billion, one hundred twenty-four million, one hundred three thousand, four hundred thirty-one".