421420312031 has 16 divisors (see below), whose sum is σ = 438234953184. Its totient is φ = 404895942144.

The previous prime is 421420311979. The next prime is 421420312067. The reversal of 421420312031 is 130213024124.

It is a cyclic number.

It is not a de Polignac number, because 421420312031 - 2³⁴ = 404240442847 is a prime.

It is a super-2 number, since 2×421420312031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421420311988 and 421420312006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421420312081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6579995 + ... + 6643731.

It is an arithmetic number, because the mean of its divisors is an integer number (27389684574).

Almost surely, 2^421420312031 is an apocalyptic number.

421420312031 is a deficient number, since it is larger than the sum of its proper divisors (16814641153).

421420312031 is a wasteful number, since it uses less digits than its factorization.

421420312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66010.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 421420312031 its reverse (130213024124), we get a palindrome (551633336155).

The spelling of 421420312031 in words is "four hundred twenty-one billion, four hundred twenty million, three hundred twelve thousand, thirty-one".