319400497 has 4 divisors (see below), whose sum is σ = 343969780. Its totient is φ = 294831216.

The previous prime is 319400483. The next prime is 319400503. The reversal of 319400497 is 794004913.

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 75759616 + 243640881 = 8704^2 + 15609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319400497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319400897) 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, 12284622 + ... + 12284647.

It is an arithmetic number, because the mean of its divisors is an integer number (85992445).

Almost surely, 2^319400497 is an apocalyptic number.

It is an amenable number.

319400497 is a deficient number, since it is larger than the sum of its proper divisors (24569283).

319400497 is a wasteful number, since it uses less digits than its factorization.

319400497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24569282.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 319400497 is about 17871.7793462207. The cubic root of 319400497 is about 683.5629717723.

The spelling of 319400497 in words is "three hundred nineteen million, four hundred thousand, four hundred ninety-seven".