23012311 has 12 divisors (see below), whose sum is σ = 27211800. Its totient is φ = 19398960.

The previous prime is 23012309. The next prime is 23012333. The reversal of 23012311 is 11321032.

It is not a de Polignac number, because 23012311 - 2¹ = 23012309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23012291 and 23012300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012371) 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, 861 + ... + 6838.

It is an arithmetic number, because the mean of its divisors is an integer number (2267650).

Almost surely, 2^23012311 is an apocalyptic number.

23012311 is a deficient number, since it is larger than the sum of its proper divisors (4199489).

23012311 is an equidigital number, since it uses as much as digits as its factorization.

23012311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7774 (or 7767 counting only the distinct ones).

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

The square root of 23012311 is about 4797.1148620812. The cubic root of 23012311 is about 284.4374292918.

Adding to 23012311 its reverse (11321032), we get a palindrome (34333343).

The spelling of 23012311 in words is "twenty-three million, twelve thousand, three hundred eleven".