231122605 has 16 divisors (see below), whose sum is σ = 327899520. Its totient is φ = 153018432.

The previous prime is 231122603. The next prime is 231122611. The reversal of 231122605 is 506221132.

It is not a de Polignac number, because 231122605 - 2¹ = 231122603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231122603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112839 + ... + 114868.

It is an arithmetic number, because the mean of its divisors is an integer number (20493720).

Almost surely, 2^231122605 is an apocalyptic number.

It is an amenable number.

231122605 is a deficient number, since it is larger than the sum of its proper divisors (96776915).

231122605 is a wasteful number, since it uses less digits than its factorization.

231122605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227748.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 231122605 is about 15202.7170269002. The cubic root of 231122605 is about 613.6877787106.

Adding to 231122605 its reverse (506221132), we get a palindrome (737343737).

The spelling of 231122605 in words is "two hundred thirty-one million, one hundred twenty-two thousand, six hundred five".