312312156 has 24 divisors (see below), whose sum is σ = 784784784. Its totient is φ = 96096000.

The previous prime is 312312103. The next prime is 312312157. The reversal of 312312156 is 651213213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312312157) by changing a digit.

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, 1000845 + ... + 1001156.

It is an arithmetic number, because the mean of its divisors is an integer number (32699366).

Almost surely, 2^312312156 is an apocalyptic number.

It is an amenable number.

312312156 is an abundant number, since it is smaller than the sum of its proper divisors (472472628).

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

312312156 is a wasteful number, since it uses less digits than its factorization.

312312156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002021 (or 2002019 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 312312156 is about 17672.3557003587. The cubic root of 312312156 is about 678.4684070124.

Adding to 312312156 its reverse (651213213), we get a palindrome (963525369).

The spelling of 312312156 in words is "three hundred twelve million, three hundred twelve thousand, one hundred fifty-six".