423521351 has 16 divisors (see below), whose sum is σ = 476474400. Its totient is φ = 373063680.

The previous prime is 423521347. The next prime is 423521383. The reversal of 423521351 is 153125324.

It is a happy number.

It is not a de Polignac number, because 423521351 - 2² = 423521347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423521351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423521311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102575 + ... + 106623.

It is an arithmetic number, because the mean of its divisors is an integer number (29779650).

Almost surely, 2^423521351 is an apocalyptic number.

423521351 is a deficient number, since it is larger than the sum of its proper divisors (52953049).

423521351 is a wasteful number, since it uses less digits than its factorization.

423521351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354.

The product of its digits is 3600, while the sum is 26.

The square root of 423521351 is about 20579.6343747891. The cubic root of 423521351 is about 750.9743490512.

Adding to 423521351 its reverse (153125324), we get a palindrome (576646675).

The spelling of 423521351 in words is "four hundred twenty-three million, five hundred twenty-one thousand, three hundred fifty-one".