211020312023 has 4 divisors (see below), whose sum is σ = 211125982680. Its totient is φ = 210914641368.

The previous prime is 211020312017. The next prime is 211020312029. The reversal of 211020312023 is 320213020112.

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

It is an interprime number because it is at equal distance from previous prime (211020312017) and next prime (211020312029).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211020312023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211020311992 and 211020312010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020312029) 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, 52832333 + ... + 52836326.

It is an arithmetic number, because the mean of its divisors is an integer number (52781495670).

Almost surely, 2^211020312023 is an apocalyptic number.

211020312023 is a deficient number, since it is larger than the sum of its proper divisors (105670657).

211020312023 is a wasteful number, since it uses less digits than its factorization.

211020312023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105670656.

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

Adding to 211020312023 its reverse (320213020112), we get a palindrome (531233332135).

The spelling of 211020312023 in words is "two hundred eleven billion, twenty million, three hundred twelve thousand, twenty-three".