212383477 has 4 divisors (see below), whose sum is σ = 213736396. Its totient is φ = 211030560.

The previous prime is 212383429. The next prime is 212383489. The reversal of 212383477 is 774383212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 83923921 + 128459556 = 9161^2 + 11334^2 .

It is a cyclic number.

It is not a de Polignac number, because 212383477 - 2¹⁵ = 212350709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212383417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676224 + ... + 676537.

It is an arithmetic number, because the mean of its divisors is an integer number (53434099).

Almost surely, 2^212383477 is an apocalyptic number.

It is an amenable number.

212383477 is a deficient number, since it is larger than the sum of its proper divisors (1352919).

212383477 is a wasteful number, since it uses less digits than its factorization.

212383477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352918.

The product of its digits is 56448, while the sum is 37.

The square root of 212383477 is about 14573.3824831437. The cubic root of 212383477 is about 596.6325028901.

The spelling of 212383477 in words is "two hundred twelve million, three hundred eighty-three thousand, four hundred seventy-seven".