213022210031 has 4 divisors (see below), whose sum is σ = 213025773864. Its totient is φ = 213018646200.

The previous prime is 213022209989. The next prime is 213022210109. The reversal of 213022210031 is 130012220312.

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

It is a cyclic number.

It is not a de Polignac number, because 213022210031 - 2¹⁴ = 213022193647 is a prime.

It is a super-2 number, since 2×213022210031² (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 = 213022209991 and 213022210009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213022210631) 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, 1690700 + ... + 1812321.

It is an arithmetic number, because the mean of its divisors is an integer number (53256443466).

Almost surely, 2^213022210031 is an apocalyptic number.

213022210031 is a deficient number, since it is larger than the sum of its proper divisors (3563833).

213022210031 is an equidigital number, since it uses as much as digits as its factorization.

213022210031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563832.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213022210031 its reverse (130012220312), we get a palindrome (343034430343).

The spelling of 213022210031 in words is "two hundred thirteen billion, twenty-two million, two hundred ten thousand, thirty-one".