420231313 has 8 divisors (see below), whose sum is σ = 445507560. Its totient is φ = 395016960.

The previous prime is 420231307. The next prime is 420231337. The reversal of 420231313 is 313132024.

It can be written as a sum of positive squares in 4 ways, for example, as 49168144 + 371063169 = 7012^2 + 19263^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 420231313 - 2⁵ = 420231281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420232313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098 + ... + 29011.

It is an arithmetic number, because the mean of its divisors is an integer number (55688445).

Almost surely, 2^420231313 is an apocalyptic number.

It is an amenable number.

420231313 is a deficient number, since it is larger than the sum of its proper divisors (25276247).

420231313 is a wasteful number, since it uses less digits than its factorization.

420231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30947.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 420231313 is about 20499.5442144454. The cubic root of 420231313 is about 749.0246955172.

Adding to 420231313 its reverse (313132024), we get a palindrome (733363337).

The spelling of 420231313 in words is "four hundred twenty million, two hundred thirty-one thousand, three hundred thirteen".