231081417 has 40 divisors (see below), whose sum is σ = 398235200. Its totient is φ = 130800096.

The previous prime is 231081377. The next prime is 231081421. The reversal of 231081417 is 714180132.

It is not a de Polignac number, because 231081417 - 2⁶ = 231081353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231081467) 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 39 ways as a sum of consecutive naturals, for example, 59934 + ... + 63672.

It is an arithmetic number, because the mean of its divisors is an integer number (9955880).

Almost surely, 2^231081417 is an apocalyptic number.

231081417 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

231081417 is a deficient number, since it is larger than the sum of its proper divisors (167153783).

231081417 is a wasteful number, since it uses less digits than its factorization.

231081417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867 (or 3858 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 231081417 is about 15201.3623402641. The cubic root of 231081417 is about 613.6513217633.

The spelling of 231081417 in words is "two hundred thirty-one million, eighty-one thousand, four hundred seventeen".