23511012 has 48 divisors (see below), whose sum is σ = 63891072. Its totient is φ = 6589440.

The previous prime is 23511001. The next prime is 23511013. The reversal of 23511012 is 21011532.

It is a junction number, because it is equal to n+sod(n) for n = 23510982 and 23511000.

It is not an unprimeable number, because it can be changed into a prime (23511013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1812 + ... + 7092.

It is an arithmetic number, because the mean of its divisors is an integer number (1331064).

Almost surely, 2^23511012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23511012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31945536).

23511012 is an abundant number, since it is smaller than the sum of its proper divisors (40380060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23511012 is a wasteful number, since it uses less digits than its factorization.

23511012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5348 (or 5346 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 23511012 is about 4848.8155254660. The cubic root of 23511012 is about 286.4774491965.

Adding to 23511012 its reverse (21011532), we get a palindrome (44522544).

The spelling of 23511012 in words is "twenty-three million, five hundred eleven thousand, twelve".