20231040012 has 12 divisors (see below), whose sum is σ = 47205760056. Its totient is φ = 6743680000.

The previous prime is 20231039993. The next prime is 20231040047. The reversal of 20231040012 is 21004013202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20231039973 and 20231040000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842959989 + ... + 842960012.

It is an arithmetic number, because the mean of its divisors is an integer number (3933813338).

Almost surely, 2^20231040012 is an apocalyptic number.

It is an amenable number.

20231040012 is an abundant number, since it is smaller than the sum of its proper divisors (26974720044).

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

20231040012 is a wasteful number, since it uses less digits than its factorization.

20231040012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685920008 (or 1685920006 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20231040012 its reverse (21004013202), we get a palindrome (41235053214).

The spelling of 20231040012 in words is "twenty billion, two hundred thirty-one million, forty thousand, twelve".