212310478 has 4 divisors (see below), whose sum is σ = 318465720. Its totient is φ = 106155238.

The previous prime is 212310457. The next prime is 212310509. The reversal of 212310478 is 874013212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53077618 + ... + 53077621.

It is an arithmetic number, because the mean of its divisors is an integer number (79616430).

Almost surely, 2^212310478 is an apocalyptic number.

212310478 is a deficient number, since it is larger than the sum of its proper divisors (106155242).

212310478 is a wasteful number, since it uses less digits than its factorization.

212310478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106155241.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 212310478 is about 14570.8777360871. The cubic root of 212310478 is about 596.5641382389.

The spelling of 212310478 in words is "two hundred twelve million, three hundred ten thousand, four hundred seventy-eight".