212351434 has 4 divisors (see below), whose sum is σ = 318527154. Its totient is φ = 106175716.

The previous prime is 212351413. The next prime is 212351441. The reversal of 212351434 is 434153212.

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., 123143409 + 89208025 = 11097^2 + 9445^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212351399 and 212351408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53087857 + ... + 53087860.

Almost surely, 2^212351434 is an apocalyptic number.

212351434 is a deficient number, since it is larger than the sum of its proper divisors (106175720).

212351434 is a wasteful number, since it uses less digits than its factorization.

212351434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106175719.

The product of its digits is 2880, while the sum is 25.

The square root of 212351434 is about 14572.2830743847. The cubic root of 212351434 is about 596.6024960724.

The spelling of 212351434 in words is "two hundred twelve million, three hundred fifty-one thousand, four hundred thirty-four".