231616079 has 4 divisors (see below), whose sum is σ = 234788976. Its totient is φ = 228443184.

The previous prime is 231616057. The next prime is 231616087. The reversal of 231616079 is 970616132.

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

It is a cyclic number.

It is not a de Polignac number, because 231616079 - 2⁸ = 231615823 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 (231616009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1586339 + ... + 1586484.

It is an arithmetic number, because the mean of its divisors is an integer number (58697244).

Almost surely, 2^231616079 is an apocalyptic number.

231616079 is a deficient number, since it is larger than the sum of its proper divisors (3172897).

231616079 is an equidigital number, since it uses as much as digits as its factorization.

231616079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172896.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 231616079 is about 15218.9381692679. The cubic root of 231616079 is about 614.1242334744.

The spelling of 231616079 in words is "two hundred thirty-one million, six hundred sixteen thousand, seventy-nine".