231520750705 has 16 divisors (see below), whose sum is σ = 282400130880. Its totient is φ = 182185939008.

The previous prime is 231520750697. The next prime is 231520750717. The reversal of 231520750705 is 507057025132.

It is a cyclic number.

It is not a de Polignac number, because 231520750705 - 2³ = 231520750697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123047 + ... + 1313116.

It is an arithmetic number, because the mean of its divisors is an integer number (17650008180).

Almost surely, 2^231520750705 is an apocalyptic number.

It is an amenable number.

231520750705 is a deficient number, since it is larger than the sum of its proper divisors (50879380175).

231520750705 is a wasteful number, since it uses less digits than its factorization.

231520750705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436480.

The product of its (nonzero) digits is 73500, while the sum is 37.

Adding to 231520750705 its reverse (507057025132), we get a palindrome (738577775837).

The spelling of 231520750705 in words is "two hundred thirty-one billion, five hundred twenty million, seven hundred fifty thousand, seven hundred five".