20323211123 has 12 divisors (see below), whose sum is σ = 20607774768. Its totient is φ = 20042521200.

The previous prime is 20323211101. The next prime is 20323211137. The reversal of 20323211123 is 32111232302.

It is not a de Polignac number, because 20323211123 - 2⁸ = 20323210867 is a prime.

It is a super-2 number, since 2×20323211123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323211095 and 20323211104.

It is not an unprimeable number, because it can be changed into a prime (20323213123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8118290 + ... + 8120792.

It is an arithmetic number, because the mean of its divisors is an integer number (1717314564).

Almost surely, 2^20323211123 is an apocalyptic number.

20323211123 is a deficient number, since it is larger than the sum of its proper divisors (284563645).

20323211123 is an equidigital number, since it uses as much as digits as its factorization.

20323211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962 (or 3883 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20323211123 its reverse (32111232302), we get a palindrome (52434443425).

The spelling of 20323211123 in words is "twenty billion, three hundred twenty-three million, two hundred eleven thousand, one hundred twenty-three".