20010003331 has 4 divisors (see below), whose sum is σ = 20204275312. Its totient is φ = 19815731352.

The previous prime is 20010003269. The next prime is 20010003359. The reversal of 20010003331 is 13330001002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20010003331 - 2²³ = 20001614723 is a prime.

It is a super-2 number, since 2×20010003331² (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 (20010003131) 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, 97135836 + ... + 97136041.

It is an arithmetic number, because the mean of its divisors is an integer number (5051068828).

Almost surely, 2^20010003331 is an apocalyptic number.

20010003331 is a deficient number, since it is larger than the sum of its proper divisors (194271981).

20010003331 is a wasteful number, since it uses less digits than its factorization.

20010003331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194271980.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 20010003331 its reverse (13330001002), we get a palindrome (33340004333).

The spelling of 20010003331 in words is "twenty billion, ten million, three thousand, three hundred thirty-one".