231214939 has 2 divisors, whose sum is σ = 231214940. Its totient is φ = 231214938.

The previous prime is 231214937. The next prime is 231214967. The reversal of 231214939 is 939412132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231214939 - 2¹ = 231214937 is a prime.

Together with 231214937, it forms a pair of twin primes.

It is equal to p_12705739 and since 231214939 and 12705739 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (231214931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115607469 + 115607470.

It is an arithmetic number, because the mean of its divisors is an integer number (115607470).

Almost surely, 2^231214939 is an apocalyptic number.

231214939 is a deficient number, since it is larger than the sum of its proper divisors (1).

231214939 is an equidigital number, since it uses as much as digits as its factorization.

231214939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 231214939 is about 15205.7534834680. The cubic root of 231214939 is about 613.7694910456.

The spelling of 231214939 in words is "two hundred thirty-one million, two hundred fourteen thousand, nine hundred thirty-nine".