212143310431340 has 24 divisors (see below), whose sum is σ = 445502050933632. Its totient is φ = 84857114833920.

The previous prime is 212143310431309. The next prime is 212143310431363. The reversal of 212143310431340 is 43134013341212.

It is a junction number, because it is equal to n+sod(n) for n = 212143310431297 and 212143310431306.

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 7 ways as a sum of consecutive naturals, for example, 4640924 + ... + 21114563.

It is an arithmetic number, because the mean of its divisors is an integer number (18562585455568).

Almost surely, 2^{212143310431340} is an apocalyptic number.

212143310431340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212143310431340 is an abundant number, since it is smaller than the sum of its proper divisors (233358740502292).

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

212143310431340 is a wasteful number, since it uses less digits than its factorization.

212143310431340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26167337 (or 26167335 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 212143310431340 its reverse (43134013341212), we get a palindrome (255277323772552).

The spelling of 212143310431340 in words is "two hundred twelve trillion, one hundred forty-three billion, three hundred ten million, four hundred thirty-one thousand, three hundred forty".