231346285 has 8 divisors (see below), whose sum is σ = 293945976. Its totient is φ = 174190080.

The previous prime is 231346277. The next prime is 231346307. The reversal of 231346285 is 582643132.

It can be written as a sum of positive squares in 4 ways, for example, as 60808804 + 170537481 = 7798^2 + 13059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231346285 - 2³ = 231346277 is a prime.

It is a super-2 number, since 2×231346285² = 107042207166602450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231346285.

It is a congruent number.

It is an unprimeable number.

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, 1360776 + ... + 1360945.

It is an arithmetic number, because the mean of its divisors is an integer number (36743247).

Almost surely, 2^231346285 is an apocalyptic number.

It is an amenable number.

231346285 is a deficient number, since it is larger than the sum of its proper divisors (62599691).

231346285 is a wasteful number, since it uses less digits than its factorization.

231346285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721743.

The product of its digits is 34560, while the sum is 34.

The square root of 231346285 is about 15210.0718275753. The cubic root of 231346285 is about 613.8856901510.

The spelling of 231346285 in words is "two hundred thirty-one million, three hundred forty-six thousand, two hundred eighty-five".