212334305431 has 4 divisors (see below), whose sum is σ = 212826960864. Its totient is φ = 211841650000.

The previous prime is 212334305401. The next prime is 212334305467. The reversal of 212334305431 is 134503433212.

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 212334305431 - 2¹³ = 212334297239 is a prime.

It is a super-2 number, since 2×212334305431² (a number of 23 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 = 212334305393 and 212334305402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212334305401) 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, 246327070 + ... + 246327931.

It is an arithmetic number, because the mean of its divisors is an integer number (53206740216).

Almost surely, 2^212334305431 is an apocalyptic number.

212334305431 is a deficient number, since it is larger than the sum of its proper divisors (492655433).

212334305431 is an equidigital number, since it uses as much as digits as its factorization.

212334305431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492655432.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 212334305431 its reverse (134503433212), we get a palindrome (346837738643).

The spelling of 212334305431 in words is "two hundred twelve billion, three hundred thirty-four million, three hundred five thousand, four hundred thirty-one".