231929207 has 2 divisors, whose sum is σ = 231929208. Its totient is φ = 231929206.

The previous prime is 231929179. The next prime is 231929213. The reversal of 231929207 is 702929132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231929207 - 2¹⁴ = 231912823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231929287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115964603 + 115964604.

It is an arithmetic number, because the mean of its divisors is an integer number (115964604).

Almost surely, 2^231929207 is an apocalyptic number.

231929207 is a deficient number, since it is larger than the sum of its proper divisors (1).

231929207 is an equidigital number, since it uses as much as digits as its factorization.

231929207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 231929207 is about 15229.2221403458. Note that the first 3 decimals coincide. The cubic root of 231929207 is about 614.4008592028.

The spelling of 231929207 in words is "two hundred thirty-one million, nine hundred twenty-nine thousand, two hundred seven".