85731010 has 8 divisors (see below), whose sum is σ = 154315836. Its totient is φ = 34292400.

The previous prime is 85731001. The next prime is 85731011. The reversal of 85731010 is 1013758.

It can be written as a sum of positive squares in 2 ways, for example, as 79762761 + 5968249 = 8931^2 + 2443^2 .

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

It is not an unprimeable number, because it can be changed into a prime (85731011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286541 + ... + 4286560.

Almost surely, 2^85731010 is an apocalyptic number.

85731010 is a deficient number, since it is larger than the sum of its proper divisors (68584826).

85731010 is a wasteful number, since it uses less digits than its factorization.

85731010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8573108.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 85731010 is about 9259.1041683308. The cubic root of 85731010 is about 440.9398128140.

Adding to 85731010 its reverse (1013758), we get a palindrome (86744768).

The spelling of 85731010 in words is "eighty-five million, seven hundred thirty-one thousand, ten".