211020311023 has 2 divisors, whose sum is σ = 211020311024. Its totient is φ = 211020311022.

The previous prime is 211020310993. The next prime is 211020311057. The reversal of 211020311023 is 320113020112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211020311023 - 2³³ = 202430376431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211020310988 and 211020311006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211020311093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510155511 + 105510155512.

It is an arithmetic number, because the mean of its divisors is an integer number (105510155512).

Almost surely, 2^211020311023 is an apocalyptic number.

211020311023 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020311023 is an equidigital number, since it uses as much as digits as its factorization.

211020311023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 211020311023 its reverse (320113020112), we get a palindrome (531133331135).

The spelling of 211020311023 in words is "two hundred eleven billion, twenty million, three hundred eleven thousand, twenty-three".