213094261 has 4 divisors (see below), whose sum is σ = 218291724. Its totient is φ = 207896800.

The previous prime is 213094249. The next prime is 213094319. The reversal of 213094261 is 162490312.

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 110376036 + 102718225 = 10506^2 + 10135^2 .

It is a cyclic number.

It is not a de Polignac number, because 213094261 - 2⁵ = 213094229 is a prime.

It is a super-2 number, since 2×213094261² = 90818328142272242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213094061) 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, 2598670 + ... + 2598751.

It is an arithmetic number, because the mean of its divisors is an integer number (54572931).

Almost surely, 2^213094261 is an apocalyptic number.

It is an amenable number.

213094261 is a deficient number, since it is larger than the sum of its proper divisors (5197463).

213094261 is an equidigital number, since it uses as much as digits as its factorization.

213094261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5197462.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 213094261 is about 14597.7484907776. The cubic root of 213094261 is about 597.2973453007.

The spelling of 213094261 in words is "two hundred thirteen million, ninety-four thousand, two hundred sixty-one".