213732147 has 8 divisors (see below), whose sum is σ = 285069456. Its totient is φ = 142441472.

The previous prime is 213732131. The next prime is 213732157. The reversal of 213732147 is 741237312.

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

It is a cyclic number.

It is not a de Polignac number, because 213732147 - 2⁴ = 213732131 is a prime.

It is a super-2 number, since 2×213732147² = 91362861322459218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213732157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003 + ... + 20699.

It is an arithmetic number, because the mean of its divisors is an integer number (35633682).

Almost surely, 2^213732147 is an apocalyptic number.

213732147 is a deficient number, since it is larger than the sum of its proper divisors (71337309).

213732147 is a wasteful number, since it uses less digits than its factorization.

213732147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23317.

The product of its digits is 7056, while the sum is 30.

The square root of 213732147 is about 14619.5809447467. The cubic root of 213732147 is about 597.8927438948.

Adding to 213732147 its reverse (741237312), we get a palindrome (954969459).

The spelling of 213732147 in words is "two hundred thirteen million, seven hundred thirty-two thousand, one hundred forty-seven".