213212331131 has 8 divisors (see below), whose sum is σ = 215443637760. Its totient is φ = 210989657088.

The previous prime is 213212331107. The next prime is 213212331151. The reversal of 213212331131 is 131133212312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213212331131 is a prime.

It is a super-2 number, since 2×213212331131² (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 = 213212331097 and 213212331106.

It is not an unprimeable number, because it can be changed into a prime (213212331151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2108486 + ... + 2207291.

It is an arithmetic number, because the mean of its divisors is an integer number (26930454720).

Almost surely, 2^213212331131 is an apocalyptic number.

213212331131 is a deficient number, since it is larger than the sum of its proper divisors (2231306629).

213212331131 is a wasteful number, since it uses less digits than its factorization.

213212331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4316293.

The product of its digits is 648, while the sum is 23.

Adding to 213212331131 its reverse (131133212312), we get a palindrome (344345543443).

The spelling of 213212331131 in words is "two hundred thirteen billion, two hundred twelve million, three hundred thirty-one thousand, one hundred thirty-one".