231662061 has 12 divisors (see below), whose sum is σ = 335187580. Its totient is φ = 154180800.

The previous prime is 231662029. The next prime is 231662083. The reversal of 231662061 is 160266132.

231662061 is a `hidden beast` number, since 2 + 31 + 6 + 620 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 192349161 + 39312900 = 13869^2 + 6270^2 .

It is not a de Polignac number, because 231662061 - 2⁵ = 231662029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231662021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16006 + ... + 26823.

Almost surely, 2^231662061 is an apocalyptic number.

It is an amenable number.

231662061 is a deficient number, since it is larger than the sum of its proper divisors (103525519).

231662061 is a wasteful number, since it uses less digits than its factorization.

231662061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43436 (or 43433 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 231662061 is about 15220.4487778777. The cubic root of 231662061 is about 614.1648708258.

The spelling of 231662061 in words is "two hundred thirty-one million, six hundred sixty-two thousand, sixty-one".