20012424431 has 2 divisors, whose sum is σ = 20012424432. Its totient is φ = 20012424430.

The previous prime is 20012424403. The next prime is 20012424437. The reversal of 20012424431 is 13442421002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012424431 - 2²⁶ = 19945315567 is a prime.

It is a super-2 number, since 2×20012424431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20012424397 and 20012424406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012424437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006212215 + 10006212216.

It is an arithmetic number, because the mean of its divisors is an integer number (10006212216).

Almost surely, 2^20012424431 is an apocalyptic number.

20012424431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012424431 is an equidigital number, since it uses as much as digits as its factorization.

20012424431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20012424431 its reverse (13442421002), we get a palindrome (33454845433).

The spelling of 20012424431 in words is "twenty billion, twelve million, four hundred twenty-four thousand, four hundred thirty-one".