531171320 has 32 divisors (see below), whose sum is σ = 1196244720. Its totient is φ = 212271360.

The previous prime is 531171317. The next prime is 531171323. The reversal of 531171320 is 23171135.

It is an interprime number because it is at equal distance from previous prime (531171317) and next prime (531171323).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531171323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42155 + ... + 53285.

Almost surely, 2^531171320 is an apocalyptic number.

It is an amenable number.

531171320 is an abundant number, since it is smaller than the sum of its proper divisors (665073400).

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

531171320 is a wasteful number, since it uses less digits than its factorization.

531171320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12335 (or 12331 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 531171320 is about 23047.1542711893. The cubic root of 531171320 is about 809.8629651835.

The spelling of 531171320 in words is "five hundred thirty-one million, one hundred seventy-one thousand, three hundred twenty".