131212131300 has 54 divisors (see below), whose sum is σ = 411277138818. Its totient is φ = 34989901440.

The previous prime is 131212131299. The next prime is 131212131317. The reversal of 131212131300 is 3131212131.

131212131300 is a `hidden beast` number, since 1 + 312 + 1 + 21 + 31 + 300 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 9757093284 + 121455038016 = 98778^2 + 348504^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 72894729 + ... + 72896528.

Almost surely, 2^131212131300 is an apocalyptic number.

131212131300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212131300 is an abundant number, since it is smaller than the sum of its proper divisors (280065007518).

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

131212131300 is a wasteful number, since it uses less digits than its factorization.

131212131300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145791277 (or 145791267 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131212131300 its reverse (3131212131), we get a palindrome (134343343431).

The spelling of 131212131300 in words is "one hundred thirty-one billion, two hundred twelve million, one hundred thirty-one thousand, three hundred".