319477140 has 72 divisors (see below), whose sum is σ = 978731208. Its totient is φ = 84345600.

The previous prime is 319477139. The next prime is 319477157. The reversal of 319477140 is 41774913.

It can be written as a sum of positive squares in 4 ways, for example, as 137874564 + 181602576 = 11742^2 + 13476^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 319477095 and 319477104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9394 + ... + 26966.

It is an arithmetic number, because the mean of its divisors is an integer number (13593489).

Almost surely, 2^319477140 is an apocalyptic number.

319477140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 319477140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489365604).

319477140 is an abundant number, since it is smaller than the sum of its proper divisors (659254068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

319477140 is a wasteful number, since it uses less digits than its factorization.

319477140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17689 (or 17684 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 319477140 is about 17873.9234640859. The cubic root of 319477140 is about 683.6176430782.

The spelling of 319477140 in words is "three hundred nineteen million, four hundred seventy-seven thousand, one hundred forty".