231270145 has 8 divisors (see below), whose sum is σ = 278631360. Its totient is φ = 184278000.

The previous prime is 231270113. The next prime is 231270173. The reversal of 231270145 is 541072132.

It is a happy number.

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

It is not a de Polignac number, because 231270145 - 2⁵ = 231270113 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 90885 + ... + 93394.

It is an arithmetic number, because the mean of its divisors is an integer number (34828920).

Almost surely, 2^231270145 is an apocalyptic number.

It is an amenable number.

231270145 is a deficient number, since it is larger than the sum of its proper divisors (47361215).

231270145 is a wasteful number, since it uses less digits than its factorization.

231270145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184535.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 231270145 is about 15207.5686748408. The cubic root of 231270145 is about 613.8183360183.

The spelling of 231270145 in words is "two hundred thirty-one million, two hundred seventy thousand, one hundred forty-five".