312103012 has 12 divisors (see below), whose sum is σ = 588194236. Its totient is φ = 144047520.

The previous prime is 312103003. The next prime is 312103019. The reversal of 312103012 is 210301213.

It can be written as a sum of positive squares in 2 ways, for example, as 30735936 + 281367076 = 5544^2 + 16774^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 312102983 and 312103001.

It is not an unprimeable number, because it can be changed into a prime (312103019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000939 + ... + 3001042.

Almost surely, 2^312103012 is an apocalyptic number.

It is an amenable number.

312103012 is a deficient number, since it is larger than the sum of its proper divisors (276091224).

312103012 is a wasteful number, since it uses less digits than its factorization.

312103012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001998 (or 6001996 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 312103012 is about 17666.4374450538. The cubic root of 312103012 is about 678.3169247212.

Adding to 312103012 its reverse (210301213), we get a palindrome (522404225).

The spelling of 312103012 in words is "three hundred twelve million, one hundred three thousand, twelve".