319278242 has 16 divisors (see below), whose sum is σ = 504662400. Its totient is φ = 151075440.

The previous prime is 319278121. The next prime is 319278257. The reversal of 319278242 is 242872913.

It is a super-2 number, since 2×319278242² = 203877191629221128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 319278196 and 319278205.

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 7 ways as a sum of consecutive naturals, for example, 36359 + ... + 44277.

It is an arithmetic number, because the mean of its divisors is an integer number (31541400).

Almost surely, 2^319278242 is an apocalyptic number.

319278242 is a deficient number, since it is larger than the sum of its proper divisors (185384158).

319278242 is a wasteful number, since it uses less digits than its factorization.

319278242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9001.

The product of its digits is 48384, while the sum is 38.

The square root of 319278242 is about 17868.3586823189. The cubic root of 319278242 is about 683.4757462184.

The spelling of 319278242 in words is "three hundred nineteen million, two hundred seventy-eight thousand, two hundred forty-two".