23012311012 has 6 divisors (see below), whose sum is σ = 40271544278. Its totient is φ = 11506155504.

The previous prime is 23012310977. The next prime is 23012311013. The reversal of 23012311012 is 21011321032.

It can be written as a sum of positive squares in only one way, i.e., 18259035876 + 4753275136 = 135126^2 + 68944^2 .

It is a super-2 number, since 2×23012311012² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23012311013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2876538873 + ... + 2876538880.

Almost surely, 2^23012311012 is an apocalyptic number.

It is an amenable number.

23012311012 is a deficient number, since it is larger than the sum of its proper divisors (17259233266).

23012311012 is a wasteful number, since it uses less digits than its factorization.

23012311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753077757 (or 5753077755 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23012311012 its reverse (21011321032), we get a palindrome (44023632044).

The spelling of 23012311012 in words is "twenty-three billion, twelve million, three hundred eleven thousand, twelve".