212131302140 has 24 divisors (see below), whose sum is σ = 445486754832. Its totient is φ = 84850421760.

The previous prime is 212131302121. The next prime is 212131302233. The reversal of 212131302140 is 41203131212.

212131302140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212131302140² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892187 + ... + 1104653.

It is an arithmetic number, because the mean of its divisors is an integer number (18561948118).

Almost surely, 2^212131302140 is an apocalyptic number.

212131302140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212131302140 is an abundant number, since it is smaller than the sum of its proper divisors (233355452692).

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

212131302140 is a wasteful number, since it uses less digits than its factorization.

212131302140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262397 (or 262395 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212131302140 its reverse (41203131212), we get a palindrome (253334433352).

The spelling of 212131302140 in words is "two hundred twelve billion, one hundred thirty-one million, three hundred two thousand, one hundred forty".