20313121003 has 8 divisors (see below), whose sum is σ = 23225391072. Its totient is φ = 17403449856.

The previous prime is 20313120983. The next prime is 20313121013. The reversal of 20313121003 is 30012131302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20313121003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20313121013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632950 + ... + 664267.

It is an arithmetic number, because the mean of its divisors is an integer number (2903173884).

Almost surely, 2^20313121003 is an apocalyptic number.

20313121003 is a deficient number, since it is larger than the sum of its proper divisors (2912270069).

20313121003 is a wasteful number, since it uses less digits than its factorization.

20313121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299461.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20313121003 its reverse (30012131302), we get a palindrome (50325252305).

The spelling of 20313121003 in words is "twenty billion, three hundred thirteen million, one hundred twenty-one thousand, three".