20231203311 has 24 divisors (see below), whose sum is σ = 33754737744. Its totient is φ = 11540079360.

The previous prime is 20231203297. The next prime is 20231203319. The reversal of 20231203311 is 11330213202.

20231203311 is a `hidden beast` number, since 20 + 2 + 312 + 0 + 331 + 1 = 666.

It is not a de Polignac number, because 20231203311 - 2¹³ = 20231195119 is a prime.

It is a super-2 number, since 2×20231203311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231203319) 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, 6008776 + ... + 6012141.

It is an arithmetic number, because the mean of its divisors is an integer number (1406447406).

Almost surely, 2^20231203311 is an apocalyptic number.

20231203311 is a deficient number, since it is larger than the sum of its proper divisors (13523534433).

20231203311 is a wasteful number, since it uses less digits than its factorization.

20231203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12020951 (or 12020948 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20231203311 its reverse (11330213202), we get a palindrome (31561416513).

The spelling of 20231203311 in words is "twenty billion, two hundred thirty-one million, two hundred three thousand, three hundred eleven".