231225545 has 8 divisors (see below), whose sum is σ = 279309120. Its totient is φ = 183754800.

The previous prime is 231225539. The next prime is 231225587. The reversal of 231225545 is 545522132.

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

It is not a de Polignac number, because 231225545 - 2⁶ = 231225481 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, 152375 + ... + 153884.

It is an arithmetic number, because the mean of its divisors is an integer number (34913640).

Almost surely, 2^231225545 is an apocalyptic number.

It is an amenable number.

231225545 is a deficient number, since it is larger than the sum of its proper divisors (48083575).

231225545 is a wasteful number, since it uses less digits than its factorization.

231225545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306415.

The product of its digits is 12000, while the sum is 29.

The square root of 231225545 is about 15206.1022290395. The cubic root of 231225545 is about 613.7788755888.

Adding to 231225545 its reverse (545522132), we get a palindrome (776747677).

The spelling of 231225545 in words is "two hundred thirty-one million, two hundred twenty-five thousand, five hundred forty-five".