42231443231 has 4 divisors (see below), whose sum is σ = 44715645792. Its totient is φ = 39747240672.

The previous prime is 42231443179. The next prime is 42231443239. The reversal of 42231443231 is 13234413224.

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 42231443231 - 2³⁴ = 25051574047 is a prime.

It is a super-2 number, since 2×42231443231² (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 = 42231443194 and 42231443203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231443239) 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, 1242101255 + ... + 1242101288.

It is an arithmetic number, because the mean of its divisors is an integer number (11178911448).

Almost surely, 2^42231443231 is an apocalyptic number.

42231443231 is a deficient number, since it is larger than the sum of its proper divisors (2484202561).

42231443231 is a wasteful number, since it uses less digits than its factorization.

42231443231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484202560.

The product of its digits is 13824, while the sum is 29.

Adding to 42231443231 its reverse (13234413224), we get a palindrome (55465856455).

The spelling of 42231443231 in words is "forty-two billion, two hundred thirty-one million, four hundred forty-three thousand, two hundred thirty-one".