231616307 has 8 divisors (see below), whose sum is σ = 254139984. Its totient is φ = 209765088.

The previous prime is 231616277. The next prime is 231616321. The reversal of 231616307 is 703616132.

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

It is not a de Polignac number, because 231616307 - 2²⁴ = 214839091 is a prime.

It is a super-2 number, since 2×231616307² = 107292227336636498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231616307.

It is not an unprimeable number, because it can be changed into a prime (231616507) 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 7 ways as a sum of consecutive naturals, for example, 167393 + ... + 168770.

It is an arithmetic number, because the mean of its divisors is an integer number (31767498).

Almost surely, 2^231616307 is an apocalyptic number.

231616307 is a deficient number, since it is larger than the sum of its proper divisors (22523677).

231616307 is a wasteful number, since it uses less digits than its factorization.

231616307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336229.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 231616307 is about 15218.9456599332. The cubic root of 231616307 is about 614.1244349864.

The spelling of 231616307 in words is "two hundred thirty-one million, six hundred sixteen thousand, three hundred seven".