213157 has 8 divisors (see below), whose sum is σ = 250496. Its totient is φ = 177552.

The previous prime is 213149. The next prime is 213173. The reversal of 213157 is 751312.

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 213157 - 2³ = 213149 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 (213557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153 + ... + 670.

It is an arithmetic number, because the mean of its divisors is an integer number (31312).

2²¹³¹⁵⁷ is an apocalyptic number.

It is an amenable number.

213157 is a deficient number, since it is larger than the sum of its proper divisors (37339).

213157 is an equidigital number, since it uses as much as digits as its factorization.

213157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its digits is 210, while the sum is 19.

The square root of 213157 is about 461.6892894577. The cubic root of 213157 is about 59.7355958112.

Adding to 213157 its reverse (751312), we get a palindrome (964469).

The spelling of 213157 in words is "two hundred thirteen thousand, one hundred fifty-seven".