211311013023 has 24 divisors (see below), whose sum is σ = 336029762640. Its totient is φ = 126892344960.

The previous prime is 211311012943. The next prime is 211311013033. The reversal of 211311013023 is 320310113112.

It is not a de Polignac number, because 211311013023 - 2¹⁰ = 211311011999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211311012987 and 211311013005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211311013033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9780286 + ... + 9801867.

It is an arithmetic number, because the mean of its divisors is an integer number (14001240110).

Almost surely, 2^211311013023 is an apocalyptic number.

211311013023 is a deficient number, since it is larger than the sum of its proper divisors (124718749617).

211311013023 is a wasteful number, since it uses less digits than its factorization.

211311013023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19582279 (or 19582276 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 211311013023 its reverse (320310113112), we get a palindrome (531621126135).

The spelling of 211311013023 in words is "two hundred eleven billion, three hundred eleven million, thirteen thousand, twenty-three".