23120311 has 2 divisors, whose sum is σ = 23120312. Its totient is φ = 23120310.

The previous prime is 23120309. The next prime is 23120329. The reversal of 23120311 is 11302132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23120311 - 2¹ = 23120309 is a prime.

Together with 23120309, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23120291 and 23120300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23120611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560155 + 11560156.

It is an arithmetic number, because the mean of its divisors is an integer number (11560156).

Almost surely, 2^23120311 is an apocalyptic number.

23120311 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120311 is an equidigital number, since it uses as much as digits as its factorization.

23120311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 23120311 is about 4808.3584516964. The cubic root of 23120311 is about 284.8817032387.

Adding to 23120311 its reverse (11302132), we get a palindrome (34422443).

The spelling of 23120311 in words is "twenty-three million, one hundred twenty thousand, three hundred eleven".