785542231 has 4 divisors (see below), whose sum is σ = 789612592. Its totient is φ = 781471872.

The previous prime is 785542229. The next prime is 785542243. The reversal of 785542231 is 132245587.

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

It is a cyclic number.

It is not a de Polignac number, because 785542231 - 2¹ = 785542229 is a prime.

It is a super-2 number, since 2×785542231² = 1234153193368914722, 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 (785542211) 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, 2034891 + ... + 2035276.

It is an arithmetic number, because the mean of its divisors is an integer number (197403148).

Almost surely, 2^785542231 is an apocalyptic number.

785542231 is a deficient number, since it is larger than the sum of its proper divisors (4070361).

785542231 is a wasteful number, since it uses less digits than its factorization.

785542231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070360.

The product of its digits is 67200, while the sum is 37.

The square root of 785542231 is about 28027.5263089699. The cubic root of 785542231 is about 922.6914846469.

It can be divided in two parts, 7855 and 42231, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 785542231 in words is "seven hundred eighty-five million, five hundred forty-two thousand, two hundred thirty-one".