531433421 has 8 divisors (see below), whose sum is σ = 533875680. Its totient is φ = 528997392.

The previous prime is 531433411. The next prime is 531433451. The reversal of 531433421 is 124334135.

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 531433421 - 2¹⁰ = 531432397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531433411) 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, 257831 + ... + 259883.

It is an arithmetic number, because the mean of its divisors is an integer number (66734460).

Almost surely, 2^531433421 is an apocalyptic number.

It is an amenable number.

531433421 is a deficient number, since it is larger than the sum of its proper divisors (2442259).

531433421 is a wasteful number, since it uses less digits than its factorization.

531433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115.

The product of its digits is 4320, while the sum is 26.

The square root of 531433421 is about 23052.8397599949. The cubic root of 531433421 is about 809.9961494508.

Adding to 531433421 its reverse (124334135), we get a palindrome (655767556).

The spelling of 531433421 in words is "five hundred thirty-one million, four hundred thirty-three thousand, four hundred twenty-one".