231525145 has 8 divisors (see below), whose sum is σ = 282539520. Its totient is φ = 182080560.

The previous prime is 231525113. The next prime is 231525167. The reversal of 231525145 is 541525132.

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

It is not a de Polignac number, because 231525145 - 2⁵ = 231525113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392121 + ... + 392710.

It is an arithmetic number, because the mean of its divisors is an integer number (35317440).

Almost surely, 2^231525145 is an apocalyptic number.

It is an amenable number.

231525145 is a deficient number, since it is larger than the sum of its proper divisors (51014375).

231525145 is an equidigital number, since it uses as much as digits as its factorization.

231525145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784895.

The product of its digits is 6000, while the sum is 28.

The square root of 231525145 is about 15215.9503482366. The cubic root of 231525145 is about 614.0438532129.

The spelling of 231525145 in words is "two hundred thirty-one million, five hundred twenty-five thousand, one hundred forty-five".