231005245 has 32 divisors (see below), whose sum is σ = 296144640. Its totient is φ = 172730880.

The previous prime is 231005239. The next prime is 231005303. The reversal of 231005245 is 542500132.

It is a de Polignac number, because none of the positive numbers 2^k-231005245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564601 + ... + 565009.

It is an arithmetic number, because the mean of its divisors is an integer number (9254520).

Almost surely, 2^231005245 is an apocalyptic number.

It is an amenable number.

231005245 is a deficient number, since it is larger than the sum of its proper divisors (65139395).

231005245 is a wasteful number, since it uses less digits than its factorization.

231005245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 231005245 is about 15198.8567004232. The cubic root of 231005245 is about 613.5838878317.

Adding to 231005245 its reverse (542500132), we get a palindrome (773505377).

The spelling of 231005245 in words is "two hundred thirty-one million, five thousand, two hundred forty-five".