231203807 has 2 divisors, whose sum is σ = 231203808. Its totient is φ = 231203806.

The previous prime is 231203783. The next prime is 231203809. The reversal of 231203807 is 708302132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231203807 - 2¹⁸ = 230941663 is a prime.

Together with 231203809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231203809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115601903 + 115601904.

It is an arithmetic number, because the mean of its divisors is an integer number (115601904).

Almost surely, 2^231203807 is an apocalyptic number.

231203807 is a deficient number, since it is larger than the sum of its proper divisors (1).

231203807 is an equidigital number, since it uses as much as digits as its factorization.

231203807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 231203807 is about 15205.3874334066. The cubic root of 231203807 is about 613.7596407715.

Adding to 231203807 its reverse (708302132), we get a palindrome (939505939).

The spelling of 231203807 in words is "two hundred thirty-one million, two hundred three thousand, eight hundred seven".