212344137 has 6 divisors (see below), whose sum is σ = 306719322. Its totient is φ = 141562752.

The previous prime is 212344103. The next prime is 212344151. The reversal of 212344137 is 731443212.

It is a happy number.

212344137 is a `hidden beast` number, since 212 + 3 + 441 + 3 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 206755641 + 5588496 = 14379^2 + 2364^2 .

It is not a de Polignac number, because 212344137 - 2¹⁰ = 212343113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212344137.

It is not an unprimeable number, because it can be changed into a prime (212344157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11796888 + ... + 11796905.

It is an arithmetic number, because the mean of its divisors is an integer number (51119887).

Almost surely, 2^212344137 is an apocalyptic number.

It is an amenable number.

212344137 is a deficient number, since it is larger than the sum of its proper divisors (94375185).

212344137 is a wasteful number, since it uses less digits than its factorization.

212344137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23593799 (or 23593796 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 212344137 is about 14572.0326996614. The cubic root of 212344137 is about 596.5956623406.

Adding to 212344137 its reverse (731443212), we get a palindrome (943787349).

The spelling of 212344137 in words is "two hundred twelve million, three hundred forty-four thousand, one hundred thirty-seven".