531431020 has 24 divisors (see below), whose sum is σ = 1120165200. Its totient is φ = 211780032.

The previous prime is 531430981. The next prime is 531431059. The reversal of 531431020 is 20134135.

It is an interprime number because it is at equal distance from previous prime (531430981) and next prime (531431059).

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, 44010 + ... + 54769.

It is an arithmetic number, because the mean of its divisors is an integer number (46673550).

Almost surely, 2^531431020 is an apocalyptic number.

It is an amenable number.

531431020 is an abundant number, since it is smaller than the sum of its proper divisors (588734180).

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

531431020 is a wasteful number, since it uses less digits than its factorization.

531431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99057 (or 99055 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 531431020 is about 23052.7876839223. The cubic root of 531431020 is about 809.9949296030.

Adding to 531431020 its reverse (20134135), we get a palindrome (551565155).

The spelling of 531431020 in words is "five hundred thirty-one million, four hundred thirty-one thousand, twenty".