213210020031223 has 4 divisors (see below), whose sum is σ = 213260651719128. Its totient is φ = 213159388343320.

The previous prime is 213210020031157. The next prime is 213210020031257. The reversal of 213210020031223 is 322130020012312.

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 213210020031223 - 2²⁵ = 213209986476791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213210020031194 and 213210020031203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213210020031263) 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, 25315837636 + ... + 25315846057.

It is an arithmetic number, because the mean of its divisors is an integer number (53315162929782).

Almost surely, 2^{213210020031223} is an apocalyptic number.

213210020031223 is a deficient number, since it is larger than the sum of its proper divisors (50631687905).

213210020031223 is an equidigital number, since it uses as much as digits as its factorization.

213210020031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50631687904.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213210020031223 its reverse (322130020012312), we get a palindrome (535340040043535).

The spelling of 213210020031223 in words is "two hundred thirteen trillion, two hundred ten billion, twenty million, thirty-one thousand, two hundred twenty-three".