331345242443 has 4 divisors (see below), whose sum is σ = 332634523800. Its totient is φ = 330055961088.

The previous prime is 331345242433. The next prime is 331345242457. The reversal of 331345242443 is 344242543133.

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 331345242443 - 2⁴ = 331345242427 is a prime.

It is a super-2 number, since 2×331345242443² (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 = 331345242397 and 331345242406.

It is not an unprimeable number, because it can be changed into a prime (331345242433) 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, 644640293 + ... + 644640806.

It is an arithmetic number, because the mean of its divisors is an integer number (83158630950).

Almost surely, 2^331345242443 is an apocalyptic number.

331345242443 is a deficient number, since it is larger than the sum of its proper divisors (1289281357).

331345242443 is a wasteful number, since it uses less digits than its factorization.

331345242443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289281356.

The product of its digits is 414720, while the sum is 38.

Adding to 331345242443 its reverse (344242543133), we get a palindrome (675587785576).

The spelling of 331345242443 in words is "three hundred thirty-one billion, three hundred forty-five million, two hundred forty-two thousand, four hundred forty-three".