405223100231 has 4 divisors (see below), whose sum is σ = 405228256200. Its totient is φ = 405217944264.

The previous prime is 405223100143. The next prime is 405223100329. The reversal of 405223100231 is 132001322504.

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 405223100231 - 2³⁴ = 388043231047 is a prime.

It is a super-2 number, since 2×405223100231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405223100197 and 405223100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405223100131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2458241 + ... + 2617898.

It is an arithmetic number, because the mean of its divisors is an integer number (101307064050).

Almost surely, 2^405223100231 is an apocalyptic number.

405223100231 is a deficient number, since it is larger than the sum of its proper divisors (5155969).

405223100231 is an equidigital number, since it uses as much as digits as its factorization.

405223100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155968.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 405223100231 its reverse (132001322504), we get a palindrome (537224422735).

The spelling of 405223100231 in words is "four hundred five billion, two hundred twenty-three million, one hundred thousand, two hundred thirty-one".