423129383 has 2 divisors, whose sum is σ = 423129384. Its totient is φ = 423129382.

The previous prime is 423129379. The next prime is 423129397. The reversal of 423129383 is 383921324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423129383 - 2² = 423129379 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423129313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211564691 + 211564692.

It is an arithmetic number, because the mean of its divisors is an integer number (211564692).

Almost surely, 2^423129383 is an apocalyptic number.

423129383 is a deficient number, since it is larger than the sum of its proper divisors (1).

423129383 is an equidigital number, since it uses as much as digits as its factorization.

423129383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 423129383 is about 20570.1089690842. The cubic root of 423129383 is about 750.7426025533.

The spelling of 423129383 in words is "four hundred twenty-three million, one hundred twenty-nine thousand, three hundred eighty-three".