85850131 has 2 divisors, whose sum is σ = 85850132. Its totient is φ = 85850130.

The previous prime is 85850111. The next prime is 85850143. The reversal of 85850131 is 13105858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85850131 - 2⁷ = 85850003 is a prime.

It is a super-2 number, since 2×85850131² = 14740489985434322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85850093 and 85850102.

It is not a weakly prime, because it can be changed into another prime (85850111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42925065 + 42925066.

It is an arithmetic number, because the mean of its divisors is an integer number (42925066).

Almost surely, 2^85850131 is an apocalyptic number.

85850131 is a deficient number, since it is larger than the sum of its proper divisors (1).

85850131 is an equidigital number, since it uses as much as digits as its factorization.

85850131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 85850131 is about 9265.5345771305. The cubic root of 85850131 is about 441.1439430844.

Adding to 85850131 its reverse (13105858), we get a palindrome (98955989).

The spelling of 85850131 in words is "eighty-five million, eight hundred fifty thousand, one hundred thirty-one".