213220443031 has 8 divisors (see below), whose sum is σ = 217251420624. Its totient is φ = 209189760000.

The previous prime is 213220443019. The next prime is 213220443043. The reversal of 213220443031 is 130344022312.

It is an interprime number because it is at equal distance from previous prime (213220443019) and next prime (213220443043).

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 213220443031 - 2⁵ = 213220442999 is a prime.

It is a super-2 number, since 2×213220443031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213220442987 and 213220443005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213220443061) 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, 1865815 + ... + 1976791.

It is an arithmetic number, because the mean of its divisors is an integer number (27156427578).

Almost surely, 2^213220443031 is an apocalyptic number.

213220443031 is a deficient number, since it is larger than the sum of its proper divisors (4030977593).

213220443031 is a wasteful number, since it uses less digits than its factorization.

213220443031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147281.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 213220443031 its reverse (130344022312), we get a palindrome (343564465343).

The spelling of 213220443031 in words is "two hundred thirteen billion, two hundred twenty million, four hundred forty-three thousand, thirty-one".