420531013 has 12 divisors (see below), whose sum is σ = 492058848. Its totient is φ = 352061640.

The previous prime is 420530993. The next prime is 420531019. The reversal of 420531013 is 310135024.

It is not a de Polignac number, because 420531013 - 2²¹ = 418433861 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 (420531019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3303 + ... + 29188.

It is an arithmetic number, because the mean of its divisors is an integer number (41004904).

Almost surely, 2^420531013 is an apocalyptic number.

420531013 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

420531013 is a deficient number, since it is larger than the sum of its proper divisors (71527835).

420531013 is an equidigital number, since it uses as much as digits as its factorization.

420531013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32584 (or 32541 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 420531013 is about 20506.8528302126. The cubic root of 420531013 is about 749.2027160106.

Adding to 420531013 its reverse (310135024), we get a palindrome (730666037).

The spelling of 420531013 in words is "four hundred twenty million, five hundred thirty-one thousand, thirteen".