23123011012 has 12 divisors (see below), whose sum is σ = 40585346620. Its totient is φ = 11527197696.

The previous prime is 23123011007. The next prime is 23123011013. The reversal of 23123011012 is 21011032132.

It can be written as a sum of positive squares in 2 ways, for example, as 15048910276 + 8074100736 = 122674^2 + 89856^2 .

It is a super-2 number, since 2×23123011012² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23123011013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8575437 + ... + 8578132.

Almost surely, 2^23123011012 is an apocalyptic number.

It is an amenable number.

23123011012 is a deficient number, since it is larger than the sum of its proper divisors (17462335608).

23123011012 is a wasteful number, since it uses less digits than its factorization.

23123011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17153910 (or 17153908 counting only the distinct ones).

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

Adding to 23123011012 its reverse (21011032132), we get a palindrome (44134043144).

It can be divided in two parts, 231230 and 11012, that added together give a palindrome (242242).

The spelling of 23123011012 in words is "twenty-three billion, one hundred twenty-three million, eleven thousand, twelve".