312242156 has 12 divisors (see below), whose sum is σ = 548398368. Its totient is φ = 155556912.

The previous prime is 312242153. The next prime is 312242173. The reversal of 312242156 is 651242213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (312242153) 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, 139796 + ... + 142011.

It is an arithmetic number, because the mean of its divisors is an integer number (45699864).

Almost surely, 2^312242156 is an apocalyptic number.

It is an amenable number.

312242156 is a deficient number, since it is larger than the sum of its proper divisors (236156212).

312242156 is a wasteful number, since it uses less digits than its factorization.

312242156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282088 (or 282086 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 312242156 is about 17670.3750950567. The cubic root of 312242156 is about 678.4177137809.

Adding to 312242156 its reverse (651242213), we get a palindrome (963484369).

The spelling of 312242156 in words is "three hundred twelve million, two hundred forty-two thousand, one hundred fifty-six".