42434031231 has 6 divisors (see below), whose sum is σ = 61293600680. Its totient is φ = 28289354148.

The previous prime is 42434031229. The next prime is 42434031281. The reversal of 42434031231 is 13213043424.

42434031231 is a `hidden beast` number, since 4 + 2 + 4 + 340 + 312 + 3 + 1 = 666.

It is not a de Polignac number, because 42434031231 - 2¹ = 42434031229 is a prime.

It is a super-2 number, since 2×42434031231² (a number of 22 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 = 42434031195 and 42434031204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42434031221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2357446171 + ... + 2357446188.

Almost surely, 2^42434031231 is an apocalyptic number.

42434031231 is a deficient number, since it is larger than the sum of its proper divisors (18859569449).

42434031231 is a wasteful number, since it uses less digits than its factorization.

42434031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714892365 (or 4714892362 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 42434031231 its reverse (13213043424), we get a palindrome (55647074655).

The spelling of 42434031231 in words is "forty-two billion, four hundred thirty-four million, thirty-one thousand, two hundred thirty-one".