420431513 has 8 divisors (see below), whose sum is σ = 438964800. Its totient is φ = 401919408.

The previous prime is 420431509. The next prime is 420431519. The reversal of 420431513 is 315134024.

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 420431513 - 2² = 420431509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420431519) 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, 45923 + ... + 54311.

It is an arithmetic number, because the mean of its divisors is an integer number (54870600).

Almost surely, 2^420431513 is an apocalyptic number.

It is an amenable number.

420431513 is a deficient number, since it is larger than the sum of its proper divisors (18533287).

420431513 is a wasteful number, since it uses less digits than its factorization.

420431513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10591.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 420431513 is about 20504.4266684050. The cubic root of 420431513 is about 749.1436228260.

Adding to 420431513 its reverse (315134024), we get a palindrome (735565537).

The spelling of 420431513 in words is "four hundred twenty million, four hundred thirty-one thousand, five hundred thirteen".