1085469431 has 4 divisors (see below), whose sum is σ = 1149320592. Its totient is φ = 1021618272.

The previous prime is 1085469421. The next prime is 1085469443. The reversal of 1085469431 is 1349645801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1085469431 is a prime.

It is a super-2 number, since 2×1085469431² = 2356487771270927522, 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 (1085469421) 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 3 ways as a sum of consecutive naturals, for example, 31925555 + ... + 31925588.

It is an arithmetic number, because the mean of its divisors is an integer number (287330148).

Almost surely, 2^1085469431 is an apocalyptic number.

1085469431 is a deficient number, since it is larger than the sum of its proper divisors (63851161).

1085469431 is an equidigital number, since it uses as much as digits as its factorization.

1085469431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63851160.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1085469431 is about 32946.4631030404. The cubic root of 1085469431 is about 1027.7146146066.

The spelling of 1085469431 in words is "one billion, eighty-five million, four hundred sixty-nine thousand, four hundred thirty-one".