20231031012 has 48 divisors (see below), whose sum is σ = 49530429312. Its totient is φ = 6414819840.

The previous prime is 20231030971. The next prime is 20231031047. The reversal of 20231031012 is 21013013202.

It is a junction number, because it is equal to n+sod(n) for n = 20231030982 and 20231031000.

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 15 ways as a sum of consecutive naturals, for example, 152533 + ... + 252444.

It is an arithmetic number, because the mean of its divisors is an integer number (1031883944).

Almost surely, 2^20231031012 is an apocalyptic number.

It is an amenable number.

20231031012 is an abundant number, since it is smaller than the sum of its proper divisors (29299398300).

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

20231031012 is a wasteful number, since it uses less digits than its factorization.

20231031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405188 (or 405186 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20231031012 its reverse (21013013202), we get a palindrome (41244044214).

The spelling of 20231031012 in words is "twenty billion, two hundred thirty-one million, thirty-one thousand, twelve".