423210211409 has 2 divisors, whose sum is σ = 423210211410. Its totient is φ = 423210211408.

The previous prime is 423210211397. The next prime is 423210211433. The reversal of 423210211409 is 904112012324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257610047809 + 165600163600 = 507553^2 + 406940^2 .

It is a cyclic number.

It is not a de Polignac number, because 423210211409 - 2¹² = 423210207313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (423210211469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211605105704 + 211605105705.

It is an arithmetic number, because the mean of its divisors is an integer number (211605105705).

Almost surely, 2^423210211409 is an apocalyptic number.

It is an amenable number.

423210211409 is a deficient number, since it is larger than the sum of its proper divisors (1).

423210211409 is an equidigital number, since it uses as much as digits as its factorization.

423210211409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 423210211409 in words is "four hundred twenty-three billion, two hundred ten million, two hundred eleven thousand, four hundred nine".