311212226 has 8 divisors (see below), whose sum is σ = 502727484. Its totient is φ = 143636400.

The previous prime is 311212219. The next prime is 311212249. The reversal of 311212226 is 622212113.

It can be written as a sum of positive squares in 2 ways, for example, as 290736601 + 20475625 = 17051^2 + 4525^2 .

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

It is a super-2 number, since 2×311212226² = 193706099223750152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311212198 and 311212207.

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, 5984825 + ... + 5984876.

Almost surely, 2^311212226 is an apocalyptic number.

311212226 is a deficient number, since it is larger than the sum of its proper divisors (191515258).

311212226 is a wasteful number, since it uses less digits than its factorization.

311212226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11969716.

The product of its digits is 288, while the sum is 20.

The square root of 311212226 is about 17641.2081785801. The cubic root of 311212226 is about 677.6709724046.

Adding to 311212226 its reverse (622212113), we get a palindrome (933424339).

The spelling of 311212226 in words is "three hundred eleven million, two hundred twelve thousand, two hundred twenty-six".