319481 has 4 divisors (see below), whose sum is σ = 338292. Its totient is φ = 300672.

The previous prime is 319477. The next prime is 319483. The reversal of 319481 is 184913.

319481 = 129² + 130² + ... + 145².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 241081 + 78400 = 491^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 319481 - 2² = 319477 is a prime.

It is a super-2 number, since 2×319481² = 204136218722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 319481.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 319481.

It is not an unprimeable number, because it can be changed into a prime (319483) 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, 9380 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (84573).

2³¹⁹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

319481 is a deficient number, since it is larger than the sum of its proper divisors (18811).

319481 is a wasteful number, since it uses less digits than its factorization.

319481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18810.

The product of its digits is 864, while the sum is 26.

The square root of 319481 is about 565.2265032710. The cubic root of 319481 is about 68.3620396278.

The spelling of 319481 in words is "three hundred nineteen thousand, four hundred eighty-one".