213354243 has 14 divisors (see below), whose sum is σ = 319886124. Its totient is φ = 142235676.

The previous prime is 213354241. The next prime is 213354263. The reversal of 213354243 is 342453312.

213354243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213354243 - 2¹ = 213354241 is a prime.

It is a super-2 number, since 2×213354243² = 91040066012206098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (213354241) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 145605 + ... + 147062.

Almost surely, 2^213354243 is an apocalyptic number.

213354243 is a deficient number, since it is larger than the sum of its proper divisors (106531881).

213354243 is an frugal number, since it uses more digits than its factorization.

213354243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292685 (or 292670 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 213354243 is about 14606.6506427723. The cubic root of 213354243 is about 597.5401540447.

The spelling of 213354243 in words is "two hundred thirteen million, three hundred fifty-four thousand, two hundred forty-three".