315493 has 2 divisors, whose sum is σ = 315494. Its totient is φ = 315492.

The previous prime is 315481. The next prime is 315517. The reversal of 315493 is 394513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214369 + 101124 = 463^2 + 318^2 .

It is a cyclic number.

It is not a de Polignac number, because 315493 - 2⁵ = 315461 is a prime.

315493 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157746 + 157747.

It is an arithmetic number, because the mean of its divisors is an integer number (157747).

2³¹⁵⁴⁹³ is an apocalyptic number.

It is an amenable number.

315493 is a deficient number, since it is larger than the sum of its proper divisors (1).

315493 is an equidigital number, since it uses as much as digits as its factorization.

315493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 25.

The square root of 315493 is about 561.6876356125. The cubic root of 315493 is about 68.0763991379.

It can be divided in two parts, 315 and 493, that added together give a palindrome (808).

The spelling of 315493 in words is "three hundred fifteen thousand, four hundred ninety-three".