212230040431 has 2 divisors, whose sum is σ = 212230040432. Its totient is φ = 212230040430.

The previous prime is 212230040423. The next prime is 212230040467. The reversal of 212230040431 is 134040032212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212230040431 - 2³ = 212230040423 is a prime.

It is a super-2 number, since 2×212230040431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212230040401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115020215 + 106115020216.

It is an arithmetic number, because the mean of its divisors is an integer number (106115020216).

Almost surely, 2^212230040431 is an apocalyptic number.

212230040431 is a deficient number, since it is larger than the sum of its proper divisors (1).

212230040431 is an equidigital number, since it uses as much as digits as its factorization.

212230040431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 212230040431 its reverse (134040032212), we get a palindrome (346270072643).

The spelling of 212230040431 in words is "two hundred twelve billion, two hundred thirty million, forty thousand, four hundred thirty-one".