235131116561 has 8 divisors (see below), whose sum is σ = 256524935904. Its totient is φ = 213740341120.

The previous prime is 235131116551. The next prime is 235131116569. The reversal of 235131116561 is 165611131532.

235131116561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 235131116561 - 2⁶ = 235131116497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235131116569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597935 + ... + 909828.

It is an arithmetic number, because the mean of its divisors is an integer number (32065616988).

Almost surely, 2^235131116561 is an apocalyptic number.

It is an amenable number.

235131116561 is a deficient number, since it is larger than the sum of its proper divisors (21393819343).

235131116561 is a wasteful number, since it uses less digits than its factorization.

235131116561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521951.

The product of its digits is 16200, while the sum is 35.

The spelling of 235131116561 in words is "two hundred thirty-five billion, one hundred thirty-one million, one hundred sixteen thousand, five hundred sixty-one".