131212001402340 has 48 divisors (see below), whose sum is σ = 367871359067520. Its totient is φ = 34944366551040.

The previous prime is 131212001402333. The next prime is 131212001402387. The reversal of 131212001402340 is 43204100212131.

It is a self number, because there is not a number n which added to its sum of digits gives 131212001402340.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1421843776 + ... + 1421936055.

It is an arithmetic number, because the mean of its divisors is an integer number (7663986647240).

Almost surely, 2^{131212001402340} is an apocalyptic number.

131212001402340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212001402340 is an abundant number, since it is smaller than the sum of its proper divisors (236659357665180).

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

131212001402340 is a wasteful number, since it uses less digits than its factorization.

131212001402340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843780612 (or 2843780610 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 131212001402340 its reverse (43204100212131), we get a palindrome (174416101614471).

The spelling of 131212001402340 in words is "one hundred thirty-one trillion, two hundred twelve billion, one million, four hundred two thousand, three hundred forty".