85185083431 has 4 divisors (see below), whose sum is σ = 97354381072. Its totient is φ = 73015785792.

The previous prime is 85185083351. The next prime is 85185083447. The reversal of 85185083431 is 13438058158.

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 85185083431 - 2⁹ = 85185082919 is a prime.

It is a super-2 number, since 2×85185083431² (a number of 23 digits) 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 (85185083231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6084648810 + ... + 6084648823.

It is an arithmetic number, because the mean of its divisors is an integer number (24338595268).

Almost surely, 2^85185083431 is an apocalyptic number.

85185083431 is a deficient number, since it is larger than the sum of its proper divisors (12169297641).

85185083431 is a wasteful number, since it uses less digits than its factorization.

85185083431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12169297640.

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 85185083431 in words is "eighty-five billion, one hundred eighty-five million, eighty-three thousand, four hundred thirty-one".