85703231 has 16 divisors (see below), whose sum is σ = 89994240. Its totient is φ = 81552480.

The previous prime is 85703179. The next prime is 85703263. The reversal of 85703231 is 13230758.

It is a cyclic number.

It is not a de Polignac number, because 85703231 - 2¹⁸ = 85441087 is a prime.

It is a super-2 number, since 2×85703231² = 14690087607678722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85703194 and 85703203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85703731) 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 15 ways as a sum of consecutive naturals, for example, 478700 + ... + 478878.

It is an arithmetic number, because the mean of its divisors is an integer number (5624640).

Almost surely, 2^85703231 is an apocalyptic number.

85703231 is a deficient number, since it is larger than the sum of its proper divisors (4291009).

85703231 is a wasteful number, since it uses less digits than its factorization.

85703231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 85703231 is about 9257.6039556680. The cubic root of 85703231 is about 440.8921824786.

Adding to 85703231 its reverse (13230758), we get a palindrome (98933989).

The spelling of 85703231 in words is "eighty-five million, seven hundred three thousand, two hundred thirty-one".