211323202023031 has 4 divisors (see below), whose sum is σ = 241512230883472. Its totient is φ = 181134173162592.

The previous prime is 211323202022953. The next prime is 211323202023041. The reversal of 211323202023031 is 130320202323112.

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 211323202023031 - 2¹⁷ = 211323201891959 is a prime.

It is a super-2 number, since 2×211323202023031² (a number of 29 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 = 211323202022987 and 211323202023005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211323202023041) 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, 15094514430210 + ... + 15094514430223.

It is an arithmetic number, because the mean of its divisors is an integer number (60378057720868).

Almost surely, 2^{211323202023031} is an apocalyptic number.

211323202023031 is a deficient number, since it is larger than the sum of its proper divisors (30189028860441).

211323202023031 is an equidigital number, since it uses as much as digits as its factorization.

211323202023031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30189028860440.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 211323202023031 its reverse (130320202323112), we get a palindrome (341643404346143).

The spelling of 211323202023031 in words is "two hundred eleven trillion, three hundred twenty-three billion, two hundred two million, twenty-three thousand, thirty-one".