20003313512 has 48 divisors (see below), whose sum is σ = 46985817060. Its totient is φ = 7913396736.

The previous prime is 20003313503. The next prime is 20003313521. The reversal of 20003313512 is 21531330002.

It is an interprime number because it is at equal distance from previous prime (20003313503) and next prime (20003313521).

It can be written as a sum of positive squares in 2 ways, for example, as 19958343076 + 44970436 = 141274^2 + 6706^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1957553 + ... + 1967744.

Almost surely, 2^20003313512 is an apocalyptic number.

It is an amenable number.

20003313512 is an abundant number, since it is smaller than the sum of its proper divisors (26982503548).

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

20003313512 is a wasteful number, since it uses less digits than its factorization.

20003313512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925330 (or 3925319 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 20003313512 its reverse (21531330002), we get a palindrome (41534643514).

The spelling of 20003313512 in words is "twenty billion, three million, three hundred thirteen thousand, five hundred twelve".