42343431031 has 6 divisors (see below), whose sum is σ = 46542779696. Its totient is φ = 38494028100.

The previous prime is 42343431017. The next prime is 42343431047. The reversal of 42343431031 is 13013434324.

It is not a de Polignac number, because 42343431031 - 2¹³ = 42343422839 is a prime.

It is a super-2 number, since 2×42343431031² (a number of 22 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 (42343431931) 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, 174972735 + ... + 174972976.

Almost surely, 2^42343431031 is an apocalyptic number.

42343431031 is a deficient number, since it is larger than the sum of its proper divisors (4199348665).

42343431031 is a wasteful number, since it uses less digits than its factorization.

42343431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349945733 (or 349945722 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 42343431031 its reverse (13013434324), we get a palindrome (55356865355).

It can be divided in two parts, 42343 and 431031, that added together give a palindrome (473374).

The spelling of 42343431031 in words is "forty-two billion, three hundred forty-three million, four hundred thirty-one thousand, thirty-one".