231214807 has 4 divisors (see below), whose sum is σ = 244815696. Its totient is φ = 217613920.

The previous prime is 231214801. The next prime is 231214811. The reversal of 231214807 is 708412132.

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 231214807 - 2³ = 231214799 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 (231214801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6800419 + ... + 6800452.

It is an arithmetic number, because the mean of its divisors is an integer number (61203924).

Almost surely, 2^231214807 is an apocalyptic number.

231214807 is a deficient number, since it is larger than the sum of its proper divisors (13600889).

231214807 is a wasteful number, since it uses less digits than its factorization.

231214807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13600888.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 231214807 is about 15205.7491430051. The cubic root of 231214807 is about 613.7693742458.

Adding to 231214807 its reverse (708412132), we get a palindrome (939626939).

The spelling of 231214807 in words is "two hundred thirty-one million, two hundred fourteen thousand, eight hundred seven".