231578746079 has 4 divisors (see below), whose sum is σ = 231606124680. Its totient is φ = 231551367480.

The previous prime is 231578746067. The next prime is 231578746093. The reversal of 231578746079 is 970647875132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231578746079 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 (231578746039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13676609 + ... + 13693530.

It is an arithmetic number, because the mean of its divisors is an integer number (57901531170).

It is a 1-persistent number, because it is pandigital, but 2⋅231578746079 = 463157492158 is not.

Almost surely, 2^231578746079 is an apocalyptic number.

231578746079 is a deficient number, since it is larger than the sum of its proper divisors (27378601).

231578746079 is an equidigital number, since it uses as much as digits as its factorization.

231578746079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27378600.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 231578746079 in words is "two hundred thirty-one billion, five hundred seventy-eight million, seven hundred forty-six thousand, seventy-nine".