312512242 has 8 divisors (see below), whose sum is σ = 535735296. Its totient is φ = 133933812.

The previous prime is 312512237. The next prime is 312512267. The reversal of 312512242 is 242215213.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 11161138 + ... + 11161165.

It is an arithmetic number, because the mean of its divisors is an integer number (66966912).

Almost surely, 2^312512242 is an apocalyptic number.

312512242 is a deficient number, since it is larger than the sum of its proper divisors (223223054).

312512242 is a wasteful number, since it uses less digits than its factorization.

312512242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22322312.

The product of its digits is 960, while the sum is 22.

The square root of 312512242 is about 17678.0157823213. The cubic root of 312512242 is about 678.6132653398.

Adding to 312512242 its reverse (242215213), we get a palindrome (554727455).

The spelling of 312512242 in words is "three hundred twelve million, five hundred twelve thousand, two hundred forty-two".