20031226603 has 4 divisors (see below), whose sum is σ = 20119470120. Its totient is φ = 19942983088.

The previous prime is 20031226583. The next prime is 20031226613. The reversal of 20031226603 is 30662213002.

It is a happy number.

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 20031226603 - 2⁵ = 20031226571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20031226613) 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, 44121418 + ... + 44121871.

It is an arithmetic number, because the mean of its divisors is an integer number (5029867530).

Almost surely, 2^20031226603 is an apocalyptic number.

20031226603 is a deficient number, since it is larger than the sum of its proper divisors (88243517).

20031226603 is an equidigital number, since it uses as much as digits as its factorization.

20031226603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88243516.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20031226603 its reverse (30662213002), we get a palindrome (50693439605).

The spelling of 20031226603 in words is "twenty billion, thirty-one million, two hundred twenty-six thousand, six hundred three".