212696973 has 12 divisors (see below), whose sum is σ = 308103900. Its totient is φ = 141394176.

The previous prime is 212696951. The next prime is 212696987. The reversal of 212696973 is 379696212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 153437769 + 59259204 = 12387^2 + 7698^2 .

It is not a de Polignac number, because 212696973 - 2⁸ = 212696717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212696923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30298 + ... + 36651.

It is an arithmetic number, because the mean of its divisors is an integer number (25675325).

Almost surely, 2^212696973 is an apocalyptic number.

It is an amenable number.

212696973 is a deficient number, since it is larger than the sum of its proper divisors (95406927).

212696973 is a wasteful number, since it uses less digits than its factorization.

212696973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67308 (or 67305 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 212696973 is about 14584.1342903856. The cubic root of 212696973 is about 596.9259186041.

It can be divided in two parts, 2126 and 96973, that added together give a palindrome (99099).

The spelling of 212696973 in words is "two hundred twelve million, six hundred ninety-six thousand, nine hundred seventy-three".