213105274 has 8 divisors (see below), whose sum is σ = 328297428. Its totient is φ = 103672800.

The previous prime is 213105271. The next prime is 213105287. The reversal of 213105274 is 472501312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 211906249 + 1199025 = 14557^2 + 1095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (213105271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439827 + ... + 1439974.

Almost surely, 2^213105274 is an apocalyptic number.

213105274 is a deficient number, since it is larger than the sum of its proper divisors (115192154).

213105274 is a wasteful number, since it uses less digits than its factorization.

213105274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879840.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 213105274 is about 14598.1257016098. The cubic root of 213105274 is about 597.3076348353.

Adding to 213105274 its reverse (472501312), we get a palindrome (685606586).

The spelling of 213105274 in words is "two hundred thirteen million, one hundred five thousand, two hundred seventy-four".