405531323331 has 8 divisors (see below), whose sum is σ = 540822788880. Its totient is φ = 270297036672.

The previous prime is 405531323293. The next prime is 405531323339. The reversal of 405531323331 is 133323135504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405531323331 - 2¹⁹ = 405530799043 is a prime.

It is a super-2 number, since 2×405531323331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405531323292 and 405531323301.

It is not an unprimeable number, because it can be changed into a prime (405531323339) 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 7 ways as a sum of consecutive naturals, for example, 14278170 + ... + 14306543.

It is an arithmetic number, because the mean of its divisors is an integer number (67602848610).

Almost surely, 2^405531323331 is an apocalyptic number.

405531323331 is a deficient number, since it is larger than the sum of its proper divisors (135291465549).

405531323331 is a wasteful number, since it uses less digits than its factorization.

405531323331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28589445.

The product of its (nonzero) digits is 48600, while the sum is 33.

Adding to 405531323331 its reverse (133323135504), we get a palindrome (538854458835).

The spelling of 405531323331 in words is "four hundred five billion, five hundred thirty-one million, three hundred twenty-three thousand, three hundred thirty-one".