212940814 has 4 divisors (see below), whose sum is σ = 319411224. Its totient is φ = 106470406.

The previous prime is 212940799. The next prime is 212940821. The reversal of 212940814 is 418049212.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 53235202 + ... + 53235205.

It is an arithmetic number, because the mean of its divisors is an integer number (79852806).

Almost surely, 2^212940814 is an apocalyptic number.

212940814 is a deficient number, since it is larger than the sum of its proper divisors (106470410).

212940814 is a wasteful number, since it uses less digits than its factorization.

212940814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106470409.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 212940814 is about 14592.4916995008. The cubic root of 212940814 is about 597.1539416356.

The spelling of 212940814 in words is "two hundred twelve million, nine hundred forty thousand, eight hundred fourteen".