20403003001 has 16 divisors (see below), whose sum is σ = 21434434560. Its totient is φ = 19384009920.

The previous prime is 20403002993. The next prime is 20403003017. The reversal of 20403003001 is 10030030402.

It is not a de Polignac number, because 20403003001 - 2³ = 20403002993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20403003091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2360155 + ... + 2368783.

It is an arithmetic number, because the mean of its divisors is an integer number (1339652160).

Almost surely, 2^20403003001 is an apocalyptic number.

It is an amenable number.

20403003001 is a deficient number, since it is larger than the sum of its proper divisors (1031431559).

20403003001 is a wasteful number, since it uses less digits than its factorization.

20403003001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20403003001 its reverse (10030030402), we get a palindrome (30433033403).

The spelling of 20403003001 in words is "twenty billion, four hundred three million, three thousand, one".