212431320043 has 4 divisors (see below), whose sum is σ = 212432993080. Its totient is φ = 212429647008.

The previous prime is 212431320041. The next prime is 212431320047. The reversal of 212431320043 is 340023134212.

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 212431320043 - 2¹ = 212431320041 is a prime.

It is a super-2 number, since 2×212431320043² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212431320041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628878 + ... + 905731.

It is an arithmetic number, because the mean of its divisors is an integer number (53108248270).

Almost surely, 2^212431320043 is an apocalyptic number.

212431320043 is a deficient number, since it is larger than the sum of its proper divisors (1673037).

212431320043 is a wasteful number, since it uses less digits than its factorization.

212431320043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673036.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 212431320043 its reverse (340023134212), we get a palindrome (552454454255).

The spelling of 212431320043 in words is "two hundred twelve billion, four hundred thirty-one million, three hundred twenty thousand, forty-three".