420311023 has 8 divisors (see below), whose sum is σ = 458954496. Its totient is φ = 381739800.

The previous prime is 420310987. The next prime is 420311053. The reversal of 420311023 is 320113024.

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-420311023 is a prime.

It is a super-2 number, since 2×420311023² = 353322712110613058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420310988 and 420311006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420311053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5511 + ... + 29512.

It is an arithmetic number, because the mean of its divisors is an integer number (57369312).

Almost surely, 2^420311023 is an apocalyptic number.

420311023 is a deficient number, since it is larger than the sum of its proper divisors (38643473).

420311023 is a wasteful number, since it uses less digits than its factorization.

420311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36125.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 420311023 is about 20501.4883118275. The cubic root of 420311023 is about 749.0720511696.

Adding to 420311023 its reverse (320113024), we get a palindrome (740424047).

The spelling of 420311023 in words is "four hundred twenty million, three hundred eleven thousand, twenty-three".