531251210106 has 24 divisors (see below), whose sum is σ = 1156205930880. Its totient is φ = 176289637896.

The previous prime is 531251210099. The next prime is 531251210107. The reversal of 531251210106 is 601012152135.

531251210106 is a `hidden beast` number, since 5 + 31 + 2 + 512 + 10 + 106 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 531251210106.

It is not an unprimeable number, because it can be changed into a prime (531251210107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66170776 + ... + 66178803.

It is an arithmetic number, because the mean of its divisors is an integer number (48175247120).

Almost surely, 2^531251210106 is an apocalyptic number.

531251210106 is an abundant number, since it is smaller than the sum of its proper divisors (624954720774).

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

531251210106 is a wasteful number, since it uses less digits than its factorization.

531251210106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132349810 (or 132349807 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 531251210106 in words is "five hundred thirty-one billion, two hundred fifty-one million, two hundred ten thousand, one hundred six".