420013031 has 12 divisors (see below), whose sum is σ = 444471552. Its totient is φ = 396840384.

The previous prime is 420013001. The next prime is 420013039. The reversal of 420013031 is 130310024.

It is not a de Polignac number, because 420013031 - 2¹⁰ = 420012007 is a prime.

It is a super-2 number, since 2×420013031² = 352821892419613922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420012997 and 420013015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420013039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154970 + ... + 157656.

It is an arithmetic number, because the mean of its divisors is an integer number (37039296).

Almost surely, 2^420013031 is an apocalyptic number.

420013031 is a deficient number, since it is larger than the sum of its proper divisors (24458521).

420013031 is a wasteful number, since it uses less digits than its factorization.

420013031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158 (or 3139 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 420013031 is about 20494.2194532995. The cubic root of 420013031 is about 748.8949836811.

Adding to 420013031 its reverse (130310024), we get a palindrome (550323055).

The spelling of 420013031 in words is "four hundred twenty million, thirteen thousand, thirty-one".