331361 has 4 divisors (see below), whose sum is σ = 345792. Its totient is φ = 316932.

The previous prime is 331349. The next prime is 331367. The reversal of 331361 is 163133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 163133 = 37 ⋅4409.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331361 is a prime.

It is a super-2 number, since 2×331361² = 219600224642, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331361.

It is not an unprimeable number, because it can be changed into a prime (331367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7181 + ... + 7226.

It is an arithmetic number, because the mean of its divisors is an integer number (86448).

2³³¹³⁶¹ is an apocalyptic number.

It is an amenable number.

331361 is a deficient number, since it is larger than the sum of its proper divisors (14431).

331361 is a wasteful number, since it uses less digits than its factorization.

331361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14430.

The product of its digits is 162, while the sum is 17.

The square root of 331361 is about 575.6396442220. The cubic root of 331361 is about 69.1991028652.

Adding to 331361 its reverse (163133), we get a palindrome (494494).

The spelling of 331361 in words is "three hundred thirty-one thousand, three hundred sixty-one".