231601780107 has 12 divisors (see below), whose sum is σ = 334633396344. Its totient is φ = 154356190560.

The previous prime is 231601780061. The next prime is 231601780139. The reversal of 231601780107 is 701087106132.

231601780107 is a `hidden beast` number, since 2 + 31 + 601 + 7 + 8 + 0 + 10 + 7 = 666.

It is not a de Polignac number, because 231601780107 - 2¹⁰ = 231601779083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231601787107) 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, 3717069 + ... + 3778862.

It is an arithmetic number, because the mean of its divisors is an integer number (27886116362).

Almost surely, 2^231601780107 is an apocalyptic number.

231601780107 is a deficient number, since it is larger than the sum of its proper divisors (103031616237).

231601780107 is a wasteful number, since it uses less digits than its factorization.

231601780107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7499370 (or 7499367 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

Adding to 231601780107 its reverse (701087106132), we get a palindrome (932688886239).

The spelling of 231601780107 in words is "two hundred thirty-one billion, six hundred one million, seven hundred eighty thousand, one hundred seven".