6331397 has 4 divisors (see below), whose sum is σ = 6336876. Its totient is φ = 6325920.

The previous prime is 6331379. The next prime is 6331399. The reversal of 6331397 is 7931336.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4024036 + 2307361 = 2006^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 6331397 - 2⁶ = 6331333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6331399) 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, 254 + ... + 3567.

It is an arithmetic number, because the mean of its divisors is an integer number (1584219).

Almost surely, 2^6331397 is an apocalyptic number.

It is an amenable number.

6331397 is a deficient number, since it is larger than the sum of its proper divisors (5479).

6331397 is a wasteful number, since it uses less digits than its factorization.

6331397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478.

The product of its digits is 10206, while the sum is 32.

The square root of 6331397 is about 2516.2267385909. The cubic root of 6331397 is about 184.9977793744.

The spelling of 6331397 in words is "six million, three hundred thirty-one thousand, three hundred ninety-seven".