431414021 has 8 divisors (see below), whose sum is σ = 438834264. Its totient is φ = 424005120.

The previous prime is 431414003. The next prime is 431414033. The reversal of 431414021 is 120414134.

It can be written as a sum of positive squares in 4 ways, for example, as 1473796 + 429940225 = 1214^2 + 20735^2 .

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 431414021 - 2¹⁰ = 431412997 is a prime.

It is a super-2 number, since 2×431414021² = 372236115030776882, 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 = 431413984 and 431414002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431414041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114845 + ... + 118541.

It is an arithmetic number, because the mean of its divisors is an integer number (54854283).

Almost surely, 2^431414021 is an apocalyptic number.

It is an amenable number.

431414021 is a deficient number, since it is larger than the sum of its proper divisors (7420243).

431414021 is a wasteful number, since it uses less digits than its factorization.

431414021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 431414021 is about 20770.5084434638. The cubic root of 431414021 is about 755.6106756124.

Adding to 431414021 its reverse (120414134), we get a palindrome (551828155).

The spelling of 431414021 in words is "four hundred thirty-one million, four hundred fourteen thousand, twenty-one".