1423223143409 has 2 divisors, whose sum is σ = 1423223143410. Its totient is φ = 1423223143408.

The previous prime is 1423223143399. The next prime is 1423223143417. The reversal of 1423223143409 is 9043413223241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1241664490000 + 181558653409 = 1114300^2 + 426097^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423223143409 - 2¹² = 1423223139313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423223143439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711611571704 + 711611571705.

It is an arithmetic number, because the mean of its divisors is an integer number (711611571705).

Almost surely, 2^{1423223143409} is an apocalyptic number.

It is an amenable number.

1423223143409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423223143409 is an equidigital number, since it uses as much as digits as its factorization.

1423223143409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 1423223143409 in words is "one trillion, four hundred twenty-three billion, two hundred twenty-three million, one hundred forty-three thousand, four hundred nine".