213042349 has 4 divisors (see below), whose sum is σ = 229430236. Its totient is φ = 196654464.

The previous prime is 213042331. The next prime is 213042367. The reversal of 213042349 is 943240312.

213042349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (213042331) and next prime (213042367).

It can be written as a sum of positive squares in 2 ways, for example, as 8352100 + 204690249 = 2890^2 + 14307^2 .

It is a cyclic number.

It is not a de Polignac number, because 213042349 - 2¹¹ = 213040301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213046349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8193924 + ... + 8193949.

It is an arithmetic number, because the mean of its divisors is an integer number (57357559).

Almost surely, 2^213042349 is an apocalyptic number.

It is an amenable number.

213042349 is a deficient number, since it is larger than the sum of its proper divisors (16387887).

213042349 is a wasteful number, since it uses less digits than its factorization.

213042349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16387886.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 213042349 is about 14595.9703000520. The cubic root of 213042349 is about 597.2488387261.

It can be divided in two parts, 21304 and 2349, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 213042349 in words is "two hundred thirteen million, forty-two thousand, three hundred forty-nine".