236897213 has 12 divisors (see below), whose sum is σ = 280248480. Its totient is φ = 199610712.

The previous prime is 236897161. The next prime is 236897233. The reversal of 236897213 is 312798632.

It is not a de Polignac number, because 236897213 - 2¹⁶ = 236831677 is a prime.

It is a super-2 number, since 2×236897213² = 112240579054334738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236897233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38081 + ... + 43862.

It is an arithmetic number, because the mean of its divisors is an integer number (23354040).

Almost surely, 2^236897213 is an apocalyptic number.

It is an amenable number.

236897213 is a deficient number, since it is larger than the sum of its proper divisors (43351267).

236897213 is an equidigital number, since it uses as much as digits as its factorization.

236897213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82016 (or 82009 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 236897213 is about 15391.4655897351. The cubic root of 236897213 is about 618.7567986465.

The spelling of 236897213 in words is "two hundred thirty-six million, eight hundred ninety-seven thousand, two hundred thirteen".