424140344431 has 4 divisors (see below), whose sum is σ = 424723756912. Its totient is φ = 423556931952.

The previous prime is 424140344417. The next prime is 424140344483. The reversal of 424140344431 is 134443041424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 424140344431 - 2²¹ = 424138247279 is a prime.

It is a super-2 number, since 2×424140344431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424140314431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291705150 + ... + 291706603.

It is an arithmetic number, because the mean of its divisors is an integer number (106180939228).

Almost surely, 2^424140344431 is an apocalyptic number.

424140344431 is a deficient number, since it is larger than the sum of its proper divisors (583412481).

424140344431 is an equidigital number, since it uses as much as digits as its factorization.

424140344431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583412480.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 424140344431 its reverse (134443041424), we get a palindrome (558583385855).

The spelling of 424140344431 in words is "four hundred twenty-four billion, one hundred forty million, three hundred forty-four thousand, four hundred thirty-one".