213451117 has 8 divisors (see below), whose sum is σ = 233003232. Its totient is φ = 193923600.

The previous prime is 213451061. The next prime is 213451163. The reversal of 213451117 is 711154312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213451117 is a prime.

It is a super-2 number, since 2×213451117² = 91122758697095378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213451091 and 213451100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213451177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15258 + ... + 25684.

It is an arithmetic number, because the mean of its divisors is an integer number (29125404).

Almost surely, 2^213451117 is an apocalyptic number.

It is an amenable number.

213451117 is a deficient number, since it is larger than the sum of its proper divisors (19552115).

213451117 is a wasteful number, since it uses less digits than its factorization.

213451117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12299.

The product of its digits is 840, while the sum is 25.

The square root of 213451117 is about 14609.9663586197. The cubic root of 213451117 is about 597.6305785350.

The spelling of 213451117 in words is "two hundred thirteen million, four hundred fifty-one thousand, one hundred seventeen".