213212210131 has 8 divisors (see below), whose sum is σ = 216838856960. Its totient is φ = 209598633288.

The previous prime is 213212210129. The next prime is 213212210137. The reversal of 213212210131 is 131012212312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213212210131 - 2¹ = 213212210129 is a prime.

It is a super-2 number, since 2×213212210131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213212210099 and 213212210108.

It is not an unprimeable number, because it can be changed into a prime (213212210137) by changing a digit.

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, 3234591 + ... + 3299848.

It is an arithmetic number, because the mean of its divisors is an integer number (27104857120).

Almost surely, 2^213212210131 is an apocalyptic number.

213212210131 is a deficient number, since it is larger than the sum of its proper divisors (3626646829).

213212210131 is an equidigital number, since it uses as much as digits as its factorization.

213212210131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6534993.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 213212210131 its reverse (131012212312), we get a palindrome (344224422443).

The spelling of 213212210131 in words is "two hundred thirteen billion, two hundred twelve million, two hundred ten thousand, one hundred thirty-one".