212431042234 has 4 divisors (see below), whose sum is σ = 318646563354. Its totient is φ = 106215521116.

The previous prime is 212431042207. The next prime is 212431042247. The reversal of 212431042234 is 432240134212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 211367304009 + 1063738225 = 459747^2 + 32615^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53107760557 + ... + 53107760560.

Almost surely, 2^212431042234 is an apocalyptic number.

212431042234 is a deficient number, since it is larger than the sum of its proper divisors (106215521120).

212431042234 is a wasteful number, since it uses less digits than its factorization.

212431042234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106215521119.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 212431042234 its reverse (432240134212), we get a palindrome (644671176446).

The spelling of 212431042234 in words is "two hundred twelve billion, four hundred thirty-one million, forty-two thousand, two hundred thirty-four".