20311232323 has 2 divisors, whose sum is σ = 20311232324. Its totient is φ = 20311232322.

The previous prime is 20311232321. The next prime is 20311232413. The reversal of 20311232323 is 32323211302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20311232323 - 2¹ = 20311232321 is a prime.

Together with 20311232321, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20311232294 and 20311232303.

It is not a weakly prime, because it can be changed into another prime (20311232321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155616161 + 10155616162.

It is an arithmetic number, because the mean of its divisors is an integer number (10155616162).

Almost surely, 2^20311232323 is an apocalyptic number.

20311232323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311232323 is an equidigital number, since it uses as much as digits as its factorization.

20311232323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20311232323 its reverse (32323211302), we get a palindrome (52634443625).

The spelling of 20311232323 in words is "twenty billion, three hundred eleven million, two hundred thirty-two thousand, three hundred twenty-three".