85908420131 has 4 divisors (see below), whose sum is σ = 86584864512. Its totient is φ = 85231975752.

The previous prime is 85908420121. The next prime is 85908420137. The reversal of 85908420131 is 13102480958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85908420131 is a prime.

It is a super-2 number, since 2×85908420131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85908420137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338222000 + ... + 338222253.

It is an arithmetic number, because the mean of its divisors is an integer number (21646216128).

Almost surely, 2^85908420131 is an apocalyptic number.

85908420131 is a deficient number, since it is larger than the sum of its proper divisors (676444381).

85908420131 is a wasteful number, since it uses less digits than its factorization.

85908420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676444380.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 85908420131 in words is "eighty-five billion, nine hundred eight million, four hundred twenty thousand, one hundred thirty-one".