231395597 has 4 divisors (see below), whose sum is σ = 231838560. Its totient is φ = 230952636.

The previous prime is 231395561. The next prime is 231395629. The reversal of 231395597 is 795593132.

231395597 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 a cyclic number.

It is not a de Polignac number, because 231395597 - 2¹⁰ = 231394573 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 (231395557) 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, 220697 + ... + 221742.

It is an arithmetic number, because the mean of its divisors is an integer number (57959640).

Almost surely, 2^231395597 is an apocalyptic number.

It is an amenable number.

231395597 is a deficient number, since it is larger than the sum of its proper divisors (442963).

231395597 is an equidigital number, since it uses as much as digits as its factorization.

231395597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442962.

The product of its digits is 255150, while the sum is 44.

The square root of 231395597 is about 15211.6927723380. The cubic root of 231395597 is about 613.9293041077.

The spelling of 231395597 in words is "two hundred thirty-one million, three hundred ninety-five thousand, five hundred ninety-seven".