231606705 has 24 divisors (see below), whose sum is σ = 407324736. Its totient is φ = 112293280.

The previous prime is 231606689. The next prime is 231606719. The reversal of 231606705 is 507606132.

231606705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231606705 - 2⁴ = 231606689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61989 + ... + 65618.

It is an arithmetic number, because the mean of its divisors is an integer number (16971864).

Almost surely, 2^231606705 is an apocalyptic number.

It is an amenable number.

231606705 is a deficient number, since it is larger than the sum of its proper divisors (175718031).

231606705 is a wasteful number, since it uses less digits than its factorization.

231606705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127637 (or 127626 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 231606705 is about 15218.6301946003. The cubic root of 231606705 is about 614.1159483872.

The spelling of 231606705 in words is "two hundred thirty-one million, six hundred six thousand, seven hundred five".