531531995100 has 72 divisors (see below), whose sum is σ = 1550008793088. Its totient is φ = 140625777600.

The previous prime is 531531995087. The next prime is 531531995107. The reversal of 531531995100 is 1599135135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531531995107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6937386 + ... + 7013585.

It is an arithmetic number, because the mean of its divisors is an integer number (21527899904).

Almost surely, 2^531531995100 is an apocalyptic number.

531531995100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

531531995100 is an abundant number, since it is smaller than the sum of its proper divisors (1018476797988).

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

531531995100 is a wasteful number, since it uses less digits than its factorization.

531531995100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13951115 (or 13951108 counting only the distinct ones).

The product of its (nonzero) digits is 91125, while the sum is 42.

The spelling of 531531995100 in words is "five hundred thirty-one billion, five hundred thirty-one million, nine hundred ninety-five thousand, one hundred".