420020031433 has 4 divisors (see below), whose sum is σ = 420108966928. Its totient is φ = 419931095940.

The previous prime is 420020031419. The next prime is 420020031437. The reversal of 420020031433 is 334130020024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420020031433 - 2⁹ = 420020030921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420020031437) 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 3 ways as a sum of consecutive naturals, for example, 44460663 + ... + 44470108.

It is an arithmetic number, because the mean of its divisors is an integer number (105027241732).

Almost surely, 2^420020031433 is an apocalyptic number.

It is an amenable number.

420020031433 is a deficient number, since it is larger than the sum of its proper divisors (88935495).

420020031433 is an equidigital number, since it uses as much as digits as its factorization.

420020031433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88935494.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 420020031433 its reverse (334130020024), we get a palindrome (754150051457).

The spelling of 420020031433 in words is "four hundred twenty billion, twenty million, thirty-one thousand, four hundred thirty-three".