213797097 has 8 divisors (see below), whose sum is σ = 316736480. Its totient is φ = 142531380.

The previous prime is 213797093. The next prime is 213797141. The reversal of 213797097 is 790797312.

It is not a de Polignac number, because 213797097 - 2² = 213797093 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (213797093) 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, 3959179 + ... + 3959232.

It is an arithmetic number, because the mean of its divisors is an integer number (39592060).

Almost surely, 2^213797097 is an apocalyptic number.

213797097 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

213797097 is a deficient number, since it is larger than the sum of its proper divisors (102939383).

213797097 is an equidigital number, since it uses as much as digits as its factorization.

213797097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7918420 (or 7918414 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 213797097 is about 14621.8021119149. The cubic root of 213797097 is about 597.9533013126.

The spelling of 213797097 in words is "two hundred thirteen million, seven hundred ninety-seven thousand, ninety-seven".