231314481 has 8 divisors (see below), whose sum is σ = 342688160. Its totient is φ = 154209636.

The previous prime is 231314453. The next prime is 231314509. The reversal of 231314481 is 184413132.

It is an interprime number because it is at equal distance from previous prime (231314453) and next prime (231314509).

It is not a de Polignac number, because 231314481 - 2¹⁰ = 231313457 is a prime.

It is a super-2 number, since 2×231314481² = 107012778240598722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8567203 = 231314481 / (2 + 3 + 1 + 3 + 1 + 4 + 4 + 8 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231314581) 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 in 7 ways as a sum of consecutive naturals, for example, 4283575 + ... + 4283628.

It is an arithmetic number, because the mean of its divisors is an integer number (42836020).

Almost surely, 2^231314481 is an apocalyptic number.

It is an amenable number.

231314481 is a deficient number, since it is larger than the sum of its proper divisors (111373679).

231314481 is an equidigital number, since it uses as much as digits as its factorization.

231314481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8567212 (or 8567206 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 231314481 is about 15209.0263001942. The cubic root of 231314481 is about 613.8575578425.

The spelling of 231314481 in words is "two hundred thirty-one million, three hundred fourteen thousand, four hundred eighty-one".