213351231 has 8 divisors (see below), whose sum is σ = 294277680. Its totient is φ = 137329472.

The previous prime is 213351227. The next prime is 213351233. The reversal of 213351231 is 132153312.

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 213351231 - 2² = 213351227 is a prime.

It is a super-2 number, since 2×213351231² = 91037495538430722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213351198 and 213351207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213351233) 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, 1226070 + ... + 1226243.

It is an arithmetic number, because the mean of its divisors is an integer number (36784710).

Almost surely, 2^213351231 is an apocalyptic number.

213351231 is a deficient number, since it is larger than the sum of its proper divisors (80926449).

213351231 is a wasteful number, since it uses less digits than its factorization.

213351231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452345.

The product of its digits is 540, while the sum is 21.

The square root of 213351231 is about 14606.5475386896. The cubic root of 213351231 is about 597.5373421338.

The spelling of 213351231 in words is "two hundred thirteen million, three hundred fifty-one thousand, two hundred thirty-one".