231520750706 has 16 divisors (see below), whose sum is σ = 401916675840. Its totient is φ = 97967188800.

The previous prime is 231520750697. The next prime is 231520750717. The reversal of 231520750706 is 607057025132.

231520750706 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231520750706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104664695 + ... + 104666906.

It is an arithmetic number, because the mean of its divisors is an integer number (25119792240).

Almost surely, 2^231520750706 is an apocalyptic number.

231520750706 is a deficient number, since it is larger than the sum of its proper divisors (170395925134).

231520750706 is a wasteful number, since it uses less digits than its factorization.

231520750706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209331689.

The product of its (nonzero) digits is 88200, while the sum is 38.

Adding to 231520750706 its reverse (607057025132), we get a palindrome (838577775838).

The spelling of 231520750706 in words is "two hundred thirty-one billion, five hundred twenty million, seven hundred fifty thousand, seven hundred six".