211320004 has 12 divisors (see below), whose sum is σ = 422640064. Its totient is φ = 90565704.

The previous prime is 211319993. The next prime is 211320041. The reversal of 211320004 is 400023112.

211320004 is an admirable number.

It is a super-2 number, since 2×211320004² = 89312288181120032, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3773544 + ... + 3773599.

Almost surely, 2^211320004 is an apocalyptic number.

It is an amenable number.

211320004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211320004 is a wasteful number, since it uses less digits than its factorization.

211320004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7547154 (or 7547152 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 211320004 is about 14536.8498650843. The cubic root of 211320004 is about 595.6349918845.

Adding to 211320004 its reverse (400023112), we get a palindrome (611343116).

The spelling of 211320004 in words is "two hundred eleven million, three hundred twenty thousand, four".