212313971 has 2 divisors, whose sum is σ = 212313972. Its totient is φ = 212313970.

The previous prime is 212313967. The next prime is 212314033. The reversal of 212313971 is 179313212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212313971 - 2² = 212313967 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212313931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106156985 + 106156986.

It is an arithmetic number, because the mean of its divisors is an integer number (106156986).

Almost surely, 2^212313971 is an apocalyptic number.

212313971 is a deficient number, since it is larger than the sum of its proper divisors (1).

212313971 is an equidigital number, since it uses as much as digits as its factorization.

212313971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 212313971 is about 14570.9975979684. The cubic root of 212313971 is about 596.5674098424.

The spelling of 212313971 in words is "two hundred twelve million, three hundred thirteen thousand, nine hundred seventy-one".