212631422 has 16 divisors (see below), whose sum is σ = 332875440. Its totient is φ = 101738112.

The previous prime is 212631409. The next prime is 212631443. The reversal of 212631422 is 224136212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9668 + ... + 22775.

It is an arithmetic number, because the mean of its divisors is an integer number (20804715).

Almost surely, 2^212631422 is an apocalyptic number.

212631422 is a deficient number, since it is larger than the sum of its proper divisors (120244018).

212631422 is a wasteful number, since it uses less digits than its factorization.

212631422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32587.

The product of its digits is 1152, while the sum is 23.

The square root of 212631422 is about 14581.8867777802. The cubic root of 212631422 is about 596.8645901787.

Adding to 212631422 its reverse (224136212), we get a palindrome (436767634).

The spelling of 212631422 in words is "two hundred twelve million, six hundred thirty-one thousand, four hundred twenty-two".