20424010431 has 16 divisors (see below), whose sum is σ = 29746120320. Its totient is φ = 12362159520.

The previous prime is 20424010427. The next prime is 20424010447. The reversal of 20424010431 is 13401042402.

It is not a de Polignac number, because 20424010431 - 2² = 20424010427 is a prime.

It is a super-2 number, since 2×20424010431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20424010398 and 20424010407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424010421) 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, 374821 + ... + 425838.

It is an arithmetic number, because the mean of its divisors is an integer number (1859132520).

Almost surely, 2^20424010431 is an apocalyptic number.

20424010431 is a deficient number, since it is larger than the sum of its proper divisors (9322109889).

20424010431 is a wasteful number, since it uses less digits than its factorization.

20424010431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801446.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20424010431 its reverse (13401042402), we get a palindrome (33825052833).

The spelling of 20424010431 in words is "twenty billion, four hundred twenty-four million, ten thousand, four hundred thirty-one".