531120432 has 20 divisors (see below), whose sum is σ = 1372061240. Its totient is φ = 177040128.

The previous prime is 531120431. The next prime is 531120449. The reversal of 531120432 is 234021135.

It is a junction number, because it is equal to n+sod(n) for n = 531120399 and 531120408.

It is not an unprimeable number, because it can be changed into a prime (531120431) 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, 5532457 + ... + 5532552.

It is an arithmetic number, because the mean of its divisors is an integer number (68603062).

Almost surely, 2^531120432 is an apocalyptic number.

It is an amenable number.

531120432 is an abundant number, since it is smaller than the sum of its proper divisors (840940808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531120432 is a wasteful number, since it uses less digits than its factorization.

531120432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11065020 (or 11065014 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 531120432 is about 23046.0502472766. The cubic root of 531120432 is about 809.8371018251.

Adding to 531120432 its reverse (234021135), we get a palindrome (765141567).

The spelling of 531120432 in words is "five hundred thirty-one million, one hundred twenty thousand, four hundred thirty-two".