213032210331 has 4 divisors (see below), whose sum is σ = 284042947112. Its totient is φ = 142021473552.

The previous prime is 213032210257. The next prime is 213032210341. The reversal of 213032210331 is 133012230312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213032210331 - 2¹⁰ = 213032209307 is a prime.

It is a super-2 number, since 2×213032210331² (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 = 213032210298 and 213032210307.

It is not an unprimeable number, because it can be changed into a prime (213032210341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35505368386 + ... + 35505368391.

It is an arithmetic number, because the mean of its divisors is an integer number (71010736778).

Almost surely, 2^213032210331 is an apocalyptic number.

213032210331 is a deficient number, since it is larger than the sum of its proper divisors (71010736781).

213032210331 is an equidigital number, since it uses as much as digits as its factorization.

213032210331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71010736780.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 213032210331 its reverse (133012230312), we get a palindrome (346044440643).

The spelling of 213032210331 in words is "two hundred thirteen billion, thirty-two million, two hundred ten thousand, three hundred thirty-one".