212315404 has 24 divisors (see below), whose sum is σ = 438330368. Its totient is φ = 88056720.

The previous prime is 212315399. The next prime is 212315407. The reversal of 212315404 is 404513212.

212315404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-6 number, since 6×212315404⁶ (a number of 51 digits) contains 666666 as substring.

It is not an unprimeable number, because it can be changed into a prime (212315407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121434 + ... + 123169.

Almost surely, 2^212315404 is an apocalyptic number.

It is an amenable number.

212315404 is an abundant number, since it is smaller than the sum of its proper divisors (226014964).

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

212315404 is a wasteful number, since it uses less digits than its factorization.

212315404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244645 (or 244643 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 212315404 is about 14571.0467709084. The cubic root of 212315404 is about 596.5687520043.

Adding to 212315404 its reverse (404513212), we get a palindrome (616828616).

The spelling of 212315404 in words is "two hundred twelve million, three hundred fifteen thousand, four hundred four".