312031012 has 6 divisors (see below), whose sum is σ = 546054278. Its totient is φ = 156015504.

The previous prime is 312030997. The next prime is 312031121. The reversal of 312031012 is 210130213.

It can be written as a sum of positive squares in only one way, i.e., 310605376 + 1425636 = 17624^2 + 1194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312030983 and 312031001.

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 as a sum of consecutive naturals, namely, 39003873 + ... + 39003880.

Almost surely, 2^312031012 is an apocalyptic number.

It is an amenable number.

312031012 is a deficient number, since it is larger than the sum of its proper divisors (234023266).

312031012 is a wasteful number, since it uses less digits than its factorization.

312031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78007757 (or 78007755 counting only the distinct ones).

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

The square root of 312031012 is about 17664.3995652272. The cubic root of 312031012 is about 678.2647597065.

Adding to 312031012 its reverse (210130213), we get a palindrome (522161225).

The spelling of 312031012 in words is "three hundred twelve million, thirty-one thousand, twelve".