20040232312 has 16 divisors (see below), whose sum is σ = 37592856000. Its totient is φ = 10015470720.

The previous prime is 20040232279. The next prime is 20040232343. The reversal of 20040232312 is 21323204002.

It is a super-2 number, since 2×20040232312² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20040232312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562312 + ... + 596887.

It is an arithmetic number, because the mean of its divisors is an integer number (2349553500).

Almost surely, 2^20040232312 is an apocalyptic number.

It is an amenable number.

20040232312 is a deficient number, since it is larger than the sum of its proper divisors (17552623688).

20040232312 is a wasteful number, since it uses less digits than its factorization.

20040232312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161366 (or 1161362 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20040232312 its reverse (21323204002), we get a palindrome (41363436314).

The spelling of 20040232312 in words is "twenty billion, forty million, two hundred thirty-two thousand, three hundred twelve".