231520001 has 8 divisors (see below), whose sum is σ = 243934080. Its totient is φ = 219301632.

The previous prime is 231519973. The next prime is 231520027. The reversal of 231520001 is 100025132.

It is a happy number.

231520001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231520001 - 2¹⁴ = 231503617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231520031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46496 + ... + 51233.

It is an arithmetic number, because the mean of its divisors is an integer number (30491760).

Almost surely, 2^231520001 is an apocalyptic number.

It is an amenable number.

231520001 is a deficient number, since it is larger than the sum of its proper divisors (12414079).

231520001 is a wasteful number, since it uses less digits than its factorization.

231520001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97855.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 231520001 is about 15215.7813141488. The cubic root of 231520001 is about 614.0393055931.

Adding to 231520001 its reverse (100025132), we get a palindrome (331545133).

The spelling of 231520001 in words is "two hundred thirty-one million, five hundred twenty thousand, one".