531139700 has 72 divisors (see below), whose sum is σ = 1418575872. Its totient is φ = 168094080.

The previous prime is 531139639. The next prime is 531139729. The reversal of 531139700 is 7931135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20084 + ... + 38283.

Almost surely, 2^531139700 is an apocalyptic number.

531139700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

531139700 is an abundant number, since it is smaller than the sum of its proper divisors (887436172).

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

531139700 is a wasteful number, since it uses less digits than its factorization.

531139700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58401 (or 58394 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 531139700 is about 23046.4682760721. The cubic root of 531139700 is about 809.8468948034.

The spelling of 531139700 in words is "five hundred thirty-one million, one hundred thirty-nine thousand, seven hundred".