131212312010 has 32 divisors (see below), whose sum is σ = 255441710160. Its totient is φ = 48239682048.

The previous prime is 131212312001. The next prime is 131212312057. The reversal of 131212312010 is 10213212131.

It can be written as a sum of positive squares in 8 ways, for example, as 51234775201 + 79977536809 = 226351^2 + 282803^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131212312010.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2135645 + ... + 2196224.

Almost surely, 2^131212312010 is an apocalyptic number.

131212312010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131212312010 is a deficient number, since it is larger than the sum of its proper divisors (124229398150).

131212312010 is a wasteful number, since it uses less digits than its factorization.

131212312010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332122.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131212312010 its reverse (10213212131), we get a palindrome (141425524141).

The spelling of 131212312010 in words is "one hundred thirty-one billion, two hundred twelve million, three hundred twelve thousand, ten".