213301137 has 8 divisors (see below), whose sum is σ = 325030336. Its totient is φ = 121886352.

The previous prime is 213301063. The next prime is 213301139. The reversal of 213301137 is 731103312.

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

It is not a de Polignac number, because 213301137 - 2¹² = 213297041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10157197 = 213301137 / (2 + 1 + 3 + 3 + 0 + 1 + 1 + 3 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213301139) 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, 5078578 + ... + 5078619.

It is an arithmetic number, because the mean of its divisors is an integer number (40628792).

Almost surely, 2^213301137 is an apocalyptic number.

It is an amenable number.

213301137 is a deficient number, since it is larger than the sum of its proper divisors (111729199).

213301137 is a wasteful number, since it uses less digits than its factorization.

213301137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157207.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 213301137 is about 14604.8326590893. The cubic root of 213301137 is about 597.4905720284.

Adding to 213301137 its reverse (731103312), we get a palindrome (944404449).

The spelling of 213301137 in words is "two hundred thirteen million, three hundred one thousand, one hundred thirty-seven".