20400233303 has 4 divisors (see below), whose sum is σ = 20401623648. Its totient is φ = 20398842960.

The previous prime is 20400233281. The next prime is 20400233327. The reversal of 20400233303 is 30333200402.

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 20400233303 - 2⁸ = 20400233047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400233003) 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, 672926 + ... + 702587.

It is an arithmetic number, because the mean of its divisors is an integer number (5100405912).

Almost surely, 2^20400233303 is an apocalyptic number.

20400233303 is a deficient number, since it is larger than the sum of its proper divisors (1390345).

20400233303 is a wasteful number, since it uses less digits than its factorization.

20400233303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390344.

The product of its (nonzero) digits is 1296, while the sum is 20.

Adding to 20400233303 its reverse (30333200402), we get a palindrome (50733433705).

The spelling of 20400233303 in words is "twenty billion, four hundred million, two hundred thirty-three thousand, three hundred three".