20312302111 has 2 divisors, whose sum is σ = 20312302112. Its totient is φ = 20312302110.

The previous prime is 20312302103. The next prime is 20312302139. The reversal of 20312302111 is 11120321302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20312302111 - 2³ = 20312302103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20312302411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156151055 + 10156151056.

It is an arithmetic number, because the mean of its divisors is an integer number (10156151056).

Almost surely, 2^20312302111 is an apocalyptic number.

20312302111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312302111 is an equidigital number, since it uses as much as digits as its factorization.

20312302111 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 20312302111 its reverse (11120321302), we get a palindrome (31432623413).

The spelling of 20312302111 in words is "twenty billion, three hundred twelve million, three hundred two thousand, one hundred eleven".