213124369 has 2 divisors, whose sum is σ = 213124370. Its totient is φ = 213124368.

The previous prime is 213124363. The next prime is 213124433. The reversal of 213124369 is 963421312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193543744 + 19580625 = 13912^2 + 4425^2 .

It is a cyclic number.

It is not a de Polignac number, because 213124369 - 2⁹ = 213123857 is a prime.

It is a super-2 number, since 2×213124369² = 90843993323296322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213124369.

It is not a weakly prime, because it can be changed into another prime (213124363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106562184 + 106562185.

It is an arithmetic number, because the mean of its divisors is an integer number (106562185).

Almost surely, 2^213124369 is an apocalyptic number.

It is an amenable number.

213124369 is a deficient number, since it is larger than the sum of its proper divisors (1).

213124369 is an equidigital number, since it uses as much as digits as its factorization.

213124369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 213124369 is about 14598.7797092771. The cubic root of 213124369 is about 597.3254746076.

It can be divided in two parts, 2131243 and 69, that added together give a palindrome (2131312).

The spelling of 213124369 in words is "two hundred thirteen million, one hundred twenty-four thousand, three hundred sixty-nine".