65031397 has 4 divisors (see below), whose sum is σ = 67129216. Its totient is φ = 62933580.

The previous prime is 65031391. The next prime is 65031403. The reversal of 65031397 is 79313056.

65031397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (65031391) and next prime (65031403).

It is a cyclic number.

It is not a de Polignac number, because 65031397 - 2¹⁵ = 64998629 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 (65031391) 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 3 ways as a sum of consecutive naturals, for example, 1048863 + ... + 1048924.

It is an arithmetic number, because the mean of its divisors is an integer number (16782304).

Almost surely, 2^65031397 is an apocalyptic number.

It is an amenable number.

65031397 is a deficient number, since it is larger than the sum of its proper divisors (2097819).

65031397 is a wasteful number, since it uses less digits than its factorization.

65031397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097818.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 65031397 is about 8064.2046725018. The cubic root of 65031397 is about 402.1373032468.

The spelling of 65031397 in words is "sixty-five million, thirty-one thousand, three hundred ninety-seven".