423508357 has 2 divisors, whose sum is σ = 423508358. Its totient is φ = 423508356.

The previous prime is 423508321. The next prime is 423508363. The reversal of 423508357 is 753805324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385179876 + 38328481 = 19626^2 + 6191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423508357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423508367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211754178 + 211754179.

It is an arithmetic number, because the mean of its divisors is an integer number (211754179).

Almost surely, 2^423508357 is an apocalyptic number.

It is an amenable number.

423508357 is a deficient number, since it is larger than the sum of its proper divisors (1).

423508357 is an equidigital number, since it uses as much as digits as its factorization.

423508357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 423508357 is about 20579.3186719094. The cubic root of 423508357 is about 750.9666687926.

The spelling of 423508357 in words is "four hundred twenty-three million, five hundred eight thousand, three hundred fifty-seven".