212240342131 has 16 divisors (see below), whose sum is σ = 224585059168. Its totient is φ = 200336198400.

The previous prime is 212240342113. The next prime is 212240342159. The reversal of 212240342131 is 131243042212.

It is a cyclic number.

It is not a de Polignac number, because 212240342131 - 2⁷ = 212240342003 is a prime.

It is a super-2 number, since 2×212240342131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212240342096 and 212240342105.

It is not an unprimeable number, because it can be changed into a prime (212240342101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479325 + ... + 808846.

It is an arithmetic number, because the mean of its divisors is an integer number (14036566198).

Almost surely, 2^212240342131 is an apocalyptic number.

212240342131 is a deficient number, since it is larger than the sum of its proper divisors (12344717037).

212240342131 is a wasteful number, since it uses less digits than its factorization.

212240342131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288342.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 212240342131 its reverse (131243042212), we get a palindrome (343483384343).

The spelling of 212240342131 in words is "two hundred twelve billion, two hundred forty million, three hundred forty-two thousand, one hundred thirty-one".