319393493 has 4 divisors (see below), whose sum is σ = 319450080. Its totient is φ = 319336908.

The previous prime is 319393471. The next prime is 319393511. The reversal of 319393493 is 394393913.

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.

It is a cyclic number.

It is not a de Polignac number, because 319393493 - 2¹⁴ = 319377109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319393453) 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, 18755 + ... + 31472.

It is an arithmetic number, because the mean of its divisors is an integer number (79862520).

Almost surely, 2^319393493 is an apocalyptic number.

It is an amenable number.

319393493 is a deficient number, since it is larger than the sum of its proper divisors (56587).

319393493 is an equidigital number, since it uses as much as digits as its factorization.

319393493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56586.

The product of its digits is 236196, while the sum is 44.

The square root of 319393493 is about 17871.5833937567. The cubic root of 319393493 is about 683.5579752135.

The spelling of 319393493 in words is "three hundred nineteen million, three hundred ninety-three thousand, four hundred ninety-three".