231912307 has 8 divisors (see below), whose sum is σ = 253112832. Its totient is φ = 210731400.

The previous prime is 231912299. The next prime is 231912311. The reversal of 231912307 is 703219132.

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

It is not a de Polignac number, because 231912307 - 2³ = 231912299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231910307) 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, 31798 + ... + 38404.

It is an arithmetic number, because the mean of its divisors is an integer number (31639104).

Almost surely, 2^231912307 is an apocalyptic number.

231912307 is a deficient number, since it is larger than the sum of its proper divisors (21200525).

231912307 is a wasteful number, since it uses less digits than its factorization.

231912307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9809.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 231912307 is about 15228.6672758978. The cubic root of 231912307 is about 614.3859356451.

The spelling of 231912307 in words is "two hundred thirty-one million, nine hundred twelve thousand, three hundred seven".