231009601 has 3 divisors (see below), whose sum is σ = 231024801. Its totient is φ = 230994402.

The previous prime is 231009599. The next prime is 231009641. The reversal of 231009601 is 106900132.

The square root of 231009601 is 15199.

It is a perfect power (a square), and thus also a powerful number.

231009601 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 brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 231009601 - 2¹ = 231009599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231009641) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7600 + ... + 22798.

It is an arithmetic number, because the mean of its divisors is an integer number (77008267).

Almost surely, 2^231009601 is an apocalyptic number.

231009601 is the 15199-th square number.

231009601 is the 7600-th centered octagonal number.

It is an amenable number.

231009601 is a deficient number, since it is larger than the sum of its proper divisors (15200).

231009601 is an frugal number, since it uses more digits than its factorization.

231009601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30398 (or 15199 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The cubic root of 231009601 is about 613.5877445329.

Multiplying 231009601 by its product of nonzero digits (324), we get a square (74847110724 = 273582²).

Adding to 231009601 its reverse (106900132), we get a palindrome (337909733).

The spelling of 231009601 in words is "two hundred thirty-one million, nine thousand, six hundred one".