531347839140 has 48 divisors (see below), whose sum is σ = 1487805806592. Its totient is φ = 141689723136.

The previous prime is 531347839129. The next prime is 531347839147. The reversal of 531347839140 is 41938743135.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 531347839140.

It is not an unprimeable number, because it can be changed into a prime (531347839147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4942237 + ... + 5048603.

It is an arithmetic number, because the mean of its divisors is an integer number (30995954304).

Almost surely, 2^531347839140 is an apocalyptic number.

It is an amenable number.

531347839140 is an abundant number, since it is smaller than the sum of its proper divisors (956457967452).

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

531347839140 is a wasteful number, since it uses less digits than its factorization.

531347839140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189636 (or 189634 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 531347839140 in words is "five hundred thirty-one billion, three hundred forty-seven million, eight hundred thirty-nine thousand, one hundred forty".