40203221423 has 4 divisors (see below), whose sum is σ = 40712123040. Its totient is φ = 39694319808.

The previous prime is 40203221419. The next prime is 40203221467. The reversal of 40203221423 is 32412230204.

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 40203221423 - 2² = 40203221419 is a prime.

It is a super-2 number, since 2×40203221423² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40203221483) 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, 254450690 + ... + 254450847.

It is an arithmetic number, because the mean of its divisors is an integer number (10178030760).

Almost surely, 2^40203221423 is an apocalyptic number.

40203221423 is a deficient number, since it is larger than the sum of its proper divisors (508901617).

40203221423 is an equidigital number, since it uses as much as digits as its factorization.

40203221423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508901616.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40203221423 its reverse (32412230204), we get a palindrome (72615451627).

The spelling of 40203221423 in words is "forty billion, two hundred three million, two hundred twenty-one thousand, four hundred twenty-three".