420535220031 has 24 divisors (see below), whose sum is σ = 620902776000. Its totient is φ = 274153476096.

The previous prime is 420535220003. The next prime is 420535220051. The reversal of 420535220031 is 130022535024.

It is a happy number.

420535220031 is a `hidden beast` number, since 420 + 5 + 3 + 5 + 2 + 200 + 31 = 666.

It is not a de Polignac number, because 420535220031 - 2⁹ = 420535219519 is a prime.

It is a super-2 number, since 2×420535220031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420535219977 and 420535220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420535220051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56595 + ... + 918843.

It is an arithmetic number, because the mean of its divisors is an integer number (25870949000).

Almost surely, 2^420535220031 is an apocalyptic number.

420535220031 is a deficient number, since it is larger than the sum of its proper divisors (200367555969).

420535220031 is a wasteful number, since it uses less digits than its factorization.

420535220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863455 (or 863452 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 420535220031 its reverse (130022535024), we get a palindrome (550557755055).

The spelling of 420535220031 in words is "four hundred twenty billion, five hundred thirty-five million, two hundred twenty thousand, thirty-one".