1085451231 has 8 divisors (see below), whose sum is σ = 1465588480. Its totient is φ = 714474072.

The previous prime is 1085451223. The next prime is 1085451239. The reversal of 1085451231 is 1321545801.

It is an interprime number because it is at equal distance from previous prime (1085451223) and next prime (1085451239).

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

It is not a de Polignac number, because 1085451231 - 2³ = 1085451223 is a prime.

It is a super-2 number, since 2×1085451231² = 2356408749758830722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085451239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2289745 + ... + 2290218.

It is an arithmetic number, because the mean of its divisors is an integer number (183198560).

Almost surely, 2^1085451231 is an apocalyptic number.

1085451231 is a deficient number, since it is larger than the sum of its proper divisors (380137249).

1085451231 is an equidigital number, since it uses as much as digits as its factorization.

1085451231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580045.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1085451231 is about 32946.1868962100. The cubic root of 1085451231 is about 1027.7088706984.

The spelling of 1085451231 in words is "one billion, eighty-five million, four hundred fifty-one thousand, two hundred thirty-one".