319680629 has 4 divisors (see below), whose sum is σ = 328320684. Its totient is φ = 311040576.

The previous prime is 319680617. The next prime is 319680637. The reversal of 319680629 is 926086913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926086913 = 23041 ⋅40193.

It can be written as a sum of positive squares in 2 ways, for example, as 228916900 + 90763729 = 15130^2 + 9527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319680629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 319680629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319650629) 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, 4319972 + ... + 4320045.

It is an arithmetic number, because the mean of its divisors is an integer number (82080171).

Almost surely, 2^319680629 is an apocalyptic number.

It is an amenable number.

319680629 is a deficient number, since it is larger than the sum of its proper divisors (8640055).

319680629 is an equidigital number, since it uses as much as digits as its factorization.

319680629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640054.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 319680629 is about 17879.6149007746. The cubic root of 319680629 is about 683.7627542915.

The spelling of 319680629 in words is "three hundred nineteen million, six hundred eighty thousand, six hundred twenty-nine".