331427 has 4 divisors (see below), whose sum is σ = 333696. Its totient is φ = 329160.

The previous prime is 331423. The next prime is 331447. The reversal of 331427 is 724133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724133 = 701 ⋅1033.

It is a cyclic number.

It is not a de Polignac number, because 331427 - 2² = 331423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331399 and 331408.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331427.

It is not an unprimeable number, because it can be changed into a prime (331423) 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, 899 + ... + 1212.

It is an arithmetic number, because the mean of its divisors is an integer number (83424).

2³³¹⁴²⁷ is an apocalyptic number.

331427 is a deficient number, since it is larger than the sum of its proper divisors (2269).

331427 is a wasteful number, since it uses less digits than its factorization.

331427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268.

The product of its digits is 504, while the sum is 20.

The square root of 331427 is about 575.6969688994. The cubic root of 331427 is about 69.2036968856.

The spelling of 331427 in words is "three hundred thirty-one thousand, four hundred twenty-seven".