212402312 has 16 divisors (see below), whose sum is σ = 403053840. Its totient is φ = 104921296.

The previous prime is 212402291. The next prime is 212402321. The reversal of 212402312 is 213204212.

212402312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212402312² = 90229484285890688, which contains 22 as substring.

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, 159278 + ... + 160605.

It is an arithmetic number, because the mean of its divisors is an integer number (25190865).

Almost surely, 2^212402312 is an apocalyptic number.

It is an amenable number.

212402312 is a deficient number, since it is larger than the sum of its proper divisors (190651528).

212402312 is a wasteful number, since it uses less digits than its factorization.

212402312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319972 (or 319968 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212402312 is about 14574.0286811849. The cubic root of 212402312 is about 596.6501396058.

Adding to 212402312 its reverse (213204212), we get a palindrome (425606524).

The spelling of 212402312 in words is "two hundred twelve million, four hundred two thousand, three hundred twelve".