387431372 has 12 divisors (see below), whose sum is σ = 679038360. Its totient is φ = 193420416.

The previous prime is 387431371. The next prime is 387431381. The reversal of 387431372 is 273134783.

It is not an unprimeable number, because it can be changed into a prime (387431371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70853 + ... + 76124.

It is an arithmetic number, because the mean of its divisors is an integer number (56586530).

Almost surely, 2^387431372 is an apocalyptic number.

It is an amenable number.

387431372 is a deficient number, since it is larger than the sum of its proper divisors (291606988).

387431372 is a wasteful number, since it uses less digits than its factorization.

387431372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147640 (or 147638 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 387431372 is about 19683.2764548995. The cubic root of 387431372 is about 729.0068260309.

The spelling of 387431372 in words is "three hundred eighty-seven million, four hundred thirty-one thousand, three hundred seventy-two".