331097 has 4 divisors (see below), whose sum is σ = 356580. Its totient is φ = 305616.

The previous prime is 331081. The next prime is 331099. The reversal of 331097 is 790133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790133 = 61 ⋅12953.

It can be written as a sum of positive squares in 2 ways, for example, as 151321 + 179776 = 389^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 331097 - 2⁴ = 331081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331099) 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, 12722 + ... + 12747.

It is an arithmetic number, because the mean of its divisors is an integer number (89145).

2³³¹⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

331097 is a deficient number, since it is larger than the sum of its proper divisors (25483).

331097 is a wasteful number, since it uses less digits than its factorization.

331097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25482.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 331097 is about 575.4102884030. The cubic root of 331097 is about 69.1807206809.

The spelling of 331097 in words is "three hundred thirty-one thousand, ninety-seven".