20002504331 has 4 divisors (see below), whose sum is σ = 20007596664. Its totient is φ = 19997412000.

The previous prime is 20002504289. The next prime is 20002504337. The reversal of 20002504331 is 13340520002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13340520002 = 2 ⋅6670260001.

It is a cyclic number.

It is not a de Polignac number, because 20002504331 - 2¹⁰ = 20002503307 is a prime.

It is a super-2 number, since 2×20002504331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002504337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2540270 + ... + 2548131.

It is an arithmetic number, because the mean of its divisors is an integer number (5001899166).

Almost surely, 2^20002504331 is an apocalyptic number.

20002504331 is a deficient number, since it is larger than the sum of its proper divisors (5092333).

20002504331 is an equidigital number, since it uses as much as digits as its factorization.

20002504331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092332.

The product of its (nonzero) digits is 720, while the sum is 20.

The spelling of 20002504331 in words is "twenty billion, two million, five hundred four thousand, three hundred thirty-one".