213239047 has 16 divisors (see below), whose sum is σ = 250214400. Its totient is φ = 177933888.

The previous prime is 213239027. The next prime is 213239051. The reversal of 213239047 is 740932312.

213239047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 213239047 - 2¹¹ = 213236999 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 (213239017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63843 + ... + 67099.

It is an arithmetic number, because the mean of its divisors is an integer number (15638400).

Almost surely, 2^213239047 is an apocalyptic number.

213239047 is a deficient number, since it is larger than the sum of its proper divisors (36975353).

213239047 is a wasteful number, since it uses less digits than its factorization.

213239047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 213239047 is about 14602.7068381174. The cubic root of 213239047 is about 597.4325917314.

The spelling of 213239047 in words is "two hundred thirteen million, two hundred thirty-nine thousand, forty-seven".