312294890 has 8 divisors (see below), whose sum is σ = 562130820. Its totient is φ = 124917952.

The previous prime is 312294883. The next prime is 312294893. The reversal of 312294890 is 98492213.

It can be written as a sum of positive squares in 2 ways, for example, as 290941249 + 21353641 = 17057^2 + 4621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×312294890² = 195056196640224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312294893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15614735 + ... + 15614754.

Almost surely, 2^312294890 is an apocalyptic number.

312294890 is a deficient number, since it is larger than the sum of its proper divisors (249835930).

312294890 is a wasteful number, since it uses less digits than its factorization.

312294890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31229496.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 312294890 is about 17671.8671905376. The cubic root of 312294890 is about 678.4559038685.

The spelling of 312294890 in words is "three hundred twelve million, two hundred ninety-four thousand, eight hundred ninety".