213220033231 has 8 divisors (see below), whose sum is σ = 220666820400. Its totient is φ = 205779537600.

The previous prime is 213220033223. The next prime is 213220033307. The reversal of 213220033231 is 132330022312.

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 213220033231 - 2³ = 213220033223 is a prime.

It is a super-2 number, since 2×213220033231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220033531) 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, 1503870 + ... + 1639531.

It is an arithmetic number, because the mean of its divisors is an integer number (27583352550).

Almost surely, 2^213220033231 is an apocalyptic number.

213220033231 is a deficient number, since it is larger than the sum of its proper divisors (7446787169).

213220033231 is a wasteful number, since it uses less digits than its factorization.

213220033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145769.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 213220033231 its reverse (132330022312), we get a palindrome (345550055543).

The spelling of 213220033231 in words is "two hundred thirteen billion, two hundred twenty million, thirty-three thousand, two hundred thirty-one".