387031312 has 10 divisors (see below), whose sum is σ = 749873198. Its totient is φ = 193515648.

The previous prime is 387031291. The next prime is 387031321. The reversal of 387031312 is 213130783.

It can be written as a sum of positive squares in only one way, i.e., 198133776 + 188897536 = 14076^2 + 13744^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12094713 + ... + 12094744.

Almost surely, 2^387031312 is an apocalyptic number.

It is an amenable number.

387031312 is a deficient number, since it is larger than the sum of its proper divisors (362841886).

387031312 is a wasteful number, since it uses less digits than its factorization.

387031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24189465 (or 24189459 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 387031312 is about 19673.1113960146. Note that the first 3 decimals coincide. The cubic root of 387031312 is about 728.7558164898.

The spelling of 387031312 in words is "three hundred eighty-seven million, thirty-one thousand, three hundred twelve".