405311222 has 8 divisors (see below), whose sum is σ = 610622400. Its totient is φ = 201770424.

The previous prime is 405311219. The next prime is 405311233. The reversal of 405311222 is 222113504.

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

It is a junction number, because it is equal to n+sod(n) for n = 405311194 and 405311203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442022 + ... + 442937.

It is an arithmetic number, because the mean of its divisors is an integer number (76327800).

Almost surely, 2^405311222 is an apocalyptic number.

405311222 is a deficient number, since it is larger than the sum of its proper divisors (205311178).

405311222 is a wasteful number, since it uses less digits than its factorization.

405311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885190.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 405311222 is about 20132.3426853409. The cubic root of 405311222 is about 740.0530896900.

Adding to 405311222 its reverse (222113504), we get a palindrome (627424726).

The spelling of 405311222 in words is "four hundred five million, three hundred eleven thousand, two hundred twenty-two".