231073471 has 2 divisors, whose sum is σ = 231073472. Its totient is φ = 231073470.

The previous prime is 231073463. The next prime is 231073489. The reversal of 231073471 is 174370132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231073471 - 2³ = 231073463 is a prime.

It is a super-3 number, since 3×231073471³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231073771) 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, 115536735 + 115536736.

It is an arithmetic number, because the mean of its divisors is an integer number (115536736).

Almost surely, 2^231073471 is an apocalyptic number.

231073471 is a deficient number, since it is larger than the sum of its proper divisors (1).

231073471 is an equidigital number, since it uses as much as digits as its factorization.

231073471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 231073471 is about 15201.1009798633. The cubic root of 231073471 is about 613.6442879808.

The spelling of 231073471 in words is "two hundred thirty-one million, seventy-three thousand, four hundred seventy-one".