420303131 has 4 divisors (see below), whose sum is σ = 420345552. Its totient is φ = 420260712.

The previous prime is 420303109. The next prime is 420303137. The reversal of 420303131 is 131303024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420303131 is a prime.

It is a super-2 number, since 2×420303131² = 353309443856806322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420303137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2450 + ... + 29096.

It is an arithmetic number, because the mean of its divisors is an integer number (105086388).

Almost surely, 2^420303131 is an apocalyptic number.

420303131 is a deficient number, since it is larger than the sum of its proper divisors (42421).

420303131 is a wasteful number, since it uses less digits than its factorization.

420303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42420.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 420303131 is about 20501.2958370928. The cubic root of 420303131 is about 749.0673628053.

Adding to 420303131 its reverse (131303024), we get a palindrome (551606155).

The spelling of 420303131 in words is "four hundred twenty million, three hundred three thousand, one hundred thirty-one".