20030040312 has 32 divisors (see below), whose sum is σ = 52710633600. Its totient is φ = 6325275744.

The previous prime is 20030040259. The next prime is 20030040341. The reversal of 20030040312 is 21304003002.

It is a junction number, because it is equal to n+sod(n) for n = 20030040291 and 20030040300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21962308 + ... + 21963219.

It is an arithmetic number, because the mean of its divisors is an integer number (1647207300).

Almost surely, 2^20030040312 is an apocalyptic number.

It is an amenable number.

20030040312 is an abundant number, since it is smaller than the sum of its proper divisors (32680593288).

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

20030040312 is a wasteful number, since it uses less digits than its factorization.

20030040312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43925555 (or 43925551 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20030040312 its reverse (21304003002), we get a palindrome (41334043314).

The spelling of 20030040312 in words is "twenty billion, thirty million, forty thousand, three hundred twelve".