397042312 has 32 divisors (see below), whose sum is σ = 754375680. Its totient is φ = 195889600.

The previous prime is 397042309. The next prime is 397042313. The reversal of 397042312 is 213240793.

It is not an unprimeable number, because it can be changed into a prime (397042313) 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, 308823 + ... + 310105.

It is an arithmetic number, because the mean of its divisors is an integer number (23574240).

Almost surely, 2^397042312 is an apocalyptic number.

It is an amenable number.

397042312 is a deficient number, since it is larger than the sum of its proper divisors (357333368).

397042312 is a wasteful number, since it uses less digits than its factorization.

397042312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 397042312 is about 19925.9206060849. The cubic root of 397042312 is about 734.9857692341.

The spelling of 397042312 in words is "three hundred ninety-seven million, forty-two thousand, three hundred twelve".