40021320203 has 4 divisors (see below), whose sum is σ = 40252657488. Its totient is φ = 39789982920.

The previous prime is 40021320161. The next prime is 40021320217. The reversal of 40021320203 is 30202312004.

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 40021320203 - 2²⁸ = 39752884747 is a prime.

It is a super-2 number, since 2×40021320203² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40021320233) 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, 115668383 + ... + 115668728.

It is an arithmetic number, because the mean of its divisors is an integer number (10063164372).

Almost surely, 2^40021320203 is an apocalyptic number.

40021320203 is a deficient number, since it is larger than the sum of its proper divisors (231337285).

40021320203 is a wasteful number, since it uses less digits than its factorization.

40021320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231337284.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 40021320203 its reverse (30202312004), we get a palindrome (70223632207).

The spelling of 40021320203 in words is "forty billion, twenty-one million, three hundred twenty thousand, two hundred three".