421523311 has 8 divisors (see below), whose sum is σ = 460647504. Its totient is φ = 382533120.

The previous prime is 421523299. The next prime is 421523321. The reversal of 421523311 is 113325124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421523311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421523321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26860 + ... + 39553.

It is an arithmetic number, because the mean of its divisors is an integer number (57580938).

Almost surely, 2^421523311 is an apocalyptic number.

421523311 is a deficient number, since it is larger than the sum of its proper divisors (39124193).

421523311 is a wasteful number, since it uses less digits than its factorization.

421523311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67001.

The product of its digits is 720, while the sum is 22.

The square root of 421523311 is about 20531.0328770863. The cubic root of 421523311 is about 749.7915337648.

Adding to 421523311 its reverse (113325124), we get a palindrome (534848435).

The spelling of 421523311 in words is "four hundred twenty-one million, five hundred twenty-three thousand, three hundred eleven".