213882937 has 8 divisors (see below), whose sum is σ = 219503592. Its totient is φ = 208281600.

The previous prime is 213882923. The next prime is 213883009. The reversal of 213882937 is 739288312.

It can be written as a sum of positive squares in 4 ways, for example, as 112699456 + 101183481 = 10616^2 + 10059^2 .

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 213882937 - 2¹¹ = 213880889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213882893 and 213882902.

It is not an unprimeable number, because it can be changed into a prime (213882437) 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, 19137 + ... + 28177.

It is an arithmetic number, because the mean of its divisors is an integer number (27437949).

Almost surely, 2^213882937 is an apocalyptic number.

It is an amenable number.

213882937 is a deficient number, since it is larger than the sum of its proper divisors (5620655).

213882937 is an equidigital number, since it uses as much as digits as its factorization.

213882937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9659.

The product of its digits is 145152, while the sum is 43.

The square root of 213882937 is about 14624.7371600313. The cubic root of 213882937 is about 598.0333171223.

The spelling of 213882937 in words is "two hundred thirteen million, eight hundred eighty-two thousand, nine hundred thirty-seven".