2193361 has 3 divisors (see below), whose sum is σ = 2194843.
Its totient is φ = 2191880.
The previous prime is 2193353. The next prime is 2193371. The reversal of 2193361 is 1633912.
Multipling 2193361 by its sum of digits (25), we get a square (54834025 = 74052).
The square root of 2193361 is 1481.
It is a perfect power (a square), and thus also a powerful number.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.
It can be written as a sum of positive squares in only one way, i.e., 938961 + 1254400 = 969^2 + 1120^2
It is not a de Polignac number, because 2193361 - 23 = 2193353 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2193311) by changing a digit.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 741 + ... + 2221.
22193361 is an apocalyptic number.
2193361 is the 1481-st square number.
2193361 is the 741-st centered octagonal number.
It is an amenable number.
2193361 is a deficient number, since it is larger than the sum of its proper divisors (1482).
2193361 is an frugal number, since it uses more digits than its factorization.
2193361 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2962 (or 1481 counting only the distinct ones).
The product of its digits is 972, while the sum is 25.
The cubic root of 2193361 is about 129.9281851873.
The spelling of 2193361 in words is "two million, one hundred ninety-three thousand, three hundred sixty-one".