212303343997 has 2 divisors, whose sum is σ = 212303343998. Its totient is φ = 212303343996.

The previous prime is 212303343919. The next prime is 212303344013. The reversal of 212303343997 is 799343303212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122818006116 + 89485337881 = 350454^2 + 299141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212303343997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212303343397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106151671998 + 106151671999.

It is an arithmetic number, because the mean of its divisors is an integer number (106151671999).

Almost surely, 2^212303343997 is an apocalyptic number.

It is an amenable number.

212303343997 is a deficient number, since it is larger than the sum of its proper divisors (1).

212303343997 is an equidigital number, since it uses as much as digits as its factorization.

212303343997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 46.

The spelling of 212303343997 in words is "two hundred twelve billion, three hundred three million, three hundred forty-three thousand, nine hundred ninety-seven".