20302111101231 has 24 divisors (see below), whose sum is σ = 29658135115440. Its totient is φ = 13381145940096.

The previous prime is 20302111101229. The next prime is 20302111101269. The reversal of 20302111101231 is 13210111120302.

20302111101231 is a `hidden beast` number, since 20 + 302 + 1 + 1 + 110 + 1 + 231 = 666.

It is not a de Polignac number, because 20302111101231 - 2¹ = 20302111101229 is a prime.

It is a super-2 number, since 2×20302111101231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302111101221) 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, 5644356 + ... + 8512518.

It is an arithmetic number, because the mean of its divisors is an integer number (1235755629810).

Almost surely, 2^{20302111101231} is an apocalyptic number.

20302111101231 is a deficient number, since it is larger than the sum of its proper divisors (9356024014209).

20302111101231 is a wasteful number, since it uses less digits than its factorization.

20302111101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877095 (or 2877092 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20302111101231 its reverse (13210111120302), we get a palindrome (33512222221533).

The spelling of 20302111101231 in words is "twenty trillion, three hundred two billion, one hundred eleven million, one hundred one thousand, two hundred thirty-one".