231214307 has 2 divisors, whose sum is σ = 231214308. Its totient is φ = 231214306.

The previous prime is 231214289. The next prime is 231214343. The reversal of 231214307 is 703412132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231214307 is a prime.

It is a super-2 number, since 2×231214307² = 106920111522980498, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231214367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115607153 + 115607154.

It is an arithmetic number, because the mean of its divisors is an integer number (115607154).

Almost surely, 2^231214307 is an apocalyptic number.

231214307 is a deficient number, since it is larger than the sum of its proper divisors (1).

231214307 is an equidigital number, since it uses as much as digits as its factorization.

231214307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 231214307 is about 15205.7327018464. The cubic root of 231214307 is about 613.7689318219.

Adding to 231214307 its reverse (703412132), we get a palindrome (934626439).

The spelling of 231214307 in words is "two hundred thirty-one million, two hundred fourteen thousand, three hundred seven".