212431007 has 2 divisors, whose sum is σ = 212431008. Its totient is φ = 212431006.

The previous prime is 212430991. The next prime is 212431019. The reversal of 212431007 is 700134212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212431007 - 2⁴ = 212430991 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212431007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212431027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106215503 + 106215504.

It is an arithmetic number, because the mean of its divisors is an integer number (106215504).

Almost surely, 2^212431007 is an apocalyptic number.

212431007 is a deficient number, since it is larger than the sum of its proper divisors (1).

212431007 is an equidigital number, since it uses as much as digits as its factorization.

212431007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 212431007 is about 14575.0131046253. The cubic root of 212431007 is about 596.6770070234.

Adding to 212431007 its reverse (700134212), we get a palindrome (912565219).

The spelling of 212431007 in words is "two hundred twelve million, four hundred thirty-one thousand, seven".