131212143401535 has 96 divisors (see below), whose sum is σ = 260592480720000. Its totient is φ = 59828752908288.

The previous prime is 131212143401501. The next prime is 131212143401539. The reversal of 131212143401535 is 535104341212131.

131212143401535 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 1 + 214 + 3 + 401 + 5 + 35 = 666.

It is not a de Polignac number, because 131212143401535 - 2¹⁰ = 131212143400511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131212143401535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212143401539) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 419764281 + ... + 420076749.

It is an arithmetic number, because the mean of its divisors is an integer number (2714505007500).

Almost surely, 2^{131212143401535} is an apocalyptic number.

131212143401535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131212143401535 is a deficient number, since it is larger than the sum of its proper divisors (129380337318465).

131212143401535 is a wasteful number, since it uses less digits than its factorization.

131212143401535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315905 (or 315902 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 131212143401535 its reverse (535104341212131), we get a palindrome (666316484613666).

The spelling of 131212143401535 in words is "one hundred thirty-one trillion, two hundred twelve billion, one hundred forty-three million, four hundred one thousand, five hundred thirty-five".