431220042043 has 4 divisors (see below), whose sum is σ = 492822905200. Its totient is φ = 369617178888.

The previous prime is 431220042013. The next prime is 431220042119. The reversal of 431220042043 is 340240022134.

It is a happy number.

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 431220042043 - 2²⁹ = 430683171131 is a prime.

It is a super-2 number, since 2×431220042043² (a number of 24 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 = 431220041999 and 431220042017.

It is not an unprimeable number, because it can be changed into a prime (431220042013) 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, 30801431568 + ... + 30801431581.

It is an arithmetic number, because the mean of its divisors is an integer number (123205726300).

Almost surely, 2^431220042043 is an apocalyptic number.

431220042043 is a deficient number, since it is larger than the sum of its proper divisors (61602863157).

431220042043 is an equidigital number, since it uses as much as digits as its factorization.

431220042043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61602863156.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 431220042043 its reverse (340240022134), we get a palindrome (771460064177).

The spelling of 431220042043 in words is "four hundred thirty-one billion, two hundred twenty million, forty-two thousand, forty-three".