423210211397 has 2 divisors, whose sum is σ = 423210211398. Its totient is φ = 423210211396.

The previous prime is 423210211381. The next prime is 423210211409. The reversal of 423210211397 is 793112012324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421364563876 + 1845647521 = 649126^2 + 42961^2 .

It is a cyclic number.

It is not a de Polignac number, because 423210211397 - 2⁴ = 423210211381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423210211997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211605105698 + 211605105699.

It is an arithmetic number, because the mean of its divisors is an integer number (211605105699).

Almost surely, 2^423210211397 is an apocalyptic number.

It is an amenable number.

423210211397 is a deficient number, since it is larger than the sum of its proper divisors (1).

423210211397 is an equidigital number, since it uses as much as digits as its factorization.

423210211397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 423210211397 in words is "four hundred twenty-three billion, two hundred ten million, two hundred eleven thousand, three hundred ninety-seven".