85582805031 has 6 divisors (see below), whose sum is σ = 123619607280. Its totient is φ = 57055203348.

The previous prime is 85582804997. The next prime is 85582805047. The reversal of 85582805031 is 13050828558.

It is a de Polignac number, because none of the positive numbers 2^k-85582805031 is a prime.

It is a super-2 number, since 2×85582805031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85582806031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4754600271 + ... + 4754600288.

It is an arithmetic number, because the mean of its divisors is an integer number (20603267880).

Almost surely, 2^85582805031 is an apocalyptic number.

85582805031 is a deficient number, since it is larger than the sum of its proper divisors (38036802249).

85582805031 is a wasteful number, since it uses less digits than its factorization.

85582805031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9509200565 (or 9509200562 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 85582805031 in words is "eighty-five billion, five hundred eighty-two million, eight hundred five thousand, thirty-one".