213113271 has 16 divisors (see below), whose sum is σ = 327084800. Its totient is φ = 120901248.

The previous prime is 213113269. The next prime is 213113273. The reversal of 213113271 is 172311312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (213113269) and next prime (213113273).

It is not a de Polignac number, because 213113271 - 2¹ = 213113269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33586 + ... + 39423.

It is an arithmetic number, because the mean of its divisors is an integer number (20442800).

Almost surely, 2^213113271 is an apocalyptic number.

213113271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213113271 is a deficient number, since it is larger than the sum of its proper divisors (113971529).

213113271 is a wasteful number, since it uses less digits than its factorization.

213113271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73158.

The product of its digits is 252, while the sum is 21.

The square root of 213113271 is about 14598.3996040662. The cubic root of 213113271 is about 597.3151062747.

Adding to 213113271 its reverse (172311312), we get a palindrome (385424583).

The spelling of 213113271 in words is "two hundred thirteen million, one hundred thirteen thousand, two hundred seventy-one".