421031 has 8 divisors (see below), whose sum is σ = 458640. Its totient is φ = 384192.

The previous prime is 421019. The next prime is 421033. The reversal of 421031 is 130124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421031 - 2⁶ = 420967 is a prime.

It is a super-2 number, since 2×421031² = 354534205922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1691 + ... + 1923.

It is an arithmetic number, because the mean of its divisors is an integer number (57330).

2⁴²¹⁰³¹ is an apocalyptic number.

421031 is a deficient number, since it is larger than the sum of its proper divisors (37609).

421031 is a wasteful number, since it uses less digits than its factorization.

421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 421031 is about 648.8690160579. The cubic root of 421031 is about 74.9499517950.

Adding to 421031 its reverse (130124), we get a palindrome (551155).

The spelling of 421031 in words is "four hundred twenty-one thousand, thirty-one".