505431120 has 40 divisors (see below), whose sum is σ = 1566837216. Its totient is φ = 134781568.

The previous prime is 505431119. The next prime is 505431151. The reversal of 505431120 is 21134505.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052742 + ... + 1053221.

Almost surely, 2^505431120 is an apocalyptic number.

It is an amenable number.

505431120 is an abundant number, since it is smaller than the sum of its proper divisors (1061406096).

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

505431120 is a wasteful number, since it uses less digits than its factorization.

505431120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105979 (or 2105973 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 505431120 is about 22481.7953019771. The cubic root of 505431120 is about 796.5639715979.

Adding to 505431120 its reverse (21134505), we get a palindrome (526565625).

The spelling of 505431120 in words is "five hundred five million, four hundred thirty-one thousand, one hundred twenty".