531114421 has 4 divisors (see below), whose sum is σ = 531166572. Its totient is φ = 531062272.

The previous prime is 531114403. The next prime is 531114481. The reversal of 531114421 is 124411135.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 251856900 + 279257521 = 15870^2 + 16711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531114421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531114392 and 531114401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531114481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5260 + ... + 33013.

It is an arithmetic number, because the mean of its divisors is an integer number (132791643).

Almost surely, 2^531114421 is an apocalyptic number.

It is an amenable number.

531114421 is a deficient number, since it is larger than the sum of its proper divisors (52151).

531114421 is a wasteful number, since it uses less digits than its factorization.

531114421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52150.

The product of its digits is 480, while the sum is 22.

The square root of 531114421 is about 23045.9198341051. The cubic root of 531114421 is about 809.8340466805.

Adding to 531114421 its reverse (124411135), we get a palindrome (655525556).

The spelling of 531114421 in words is "five hundred thirty-one million, one hundred fourteen thousand, four hundred twenty-one".