42043131231 has 8 divisors (see below), whose sum is σ = 57115197360. Its totient is φ = 27499909632.

The previous prime is 42043131227. The next prime is 42043131253. The reversal of 42043131231 is 13213134024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42043131231 - 2² = 42043131227 is a prime.

It is a super-2 number, since 2×42043131231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42043131211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132210946 + ... + 132211263.

It is an arithmetic number, because the mean of its divisors is an integer number (7139399670).

Almost surely, 2^42043131231 is an apocalyptic number.

42043131231 is a deficient number, since it is larger than the sum of its proper divisors (15072066129).

42043131231 is a wasteful number, since it uses less digits than its factorization.

42043131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264422265.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 42043131231 its reverse (13213134024), we get a palindrome (55256265255).

The spelling of 42043131231 in words is "forty-two billion, forty-three million, one hundred thirty-one thousand, two hundred thirty-one".