85070131 has 2 divisors, whose sum is σ = 85070132. Its totient is φ = 85070130.

The previous prime is 85070081. The next prime is 85070143. The reversal of 85070131 is 13107058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85070131 - 2⁷ = 85070003 is a prime.

It is a super-2 number, since 2×85070131² = 14473854376714322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85070096 and 85070105.

It is not a weakly prime, because it can be changed into another prime (85070191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42535065 + 42535066.

It is an arithmetic number, because the mean of its divisors is an integer number (42535066).

Almost surely, 2^85070131 is an apocalyptic number.

85070131 is a deficient number, since it is larger than the sum of its proper divisors (1).

85070131 is an equidigital number, since it uses as much as digits as its factorization.

85070131 is an evil number, because the sum of its binary digits is even.

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

The square root of 85070131 is about 9223.3470605849. The cubic root of 85070131 is about 439.8038571358.

Adding to 85070131 its reverse (13107058), we get a palindrome (98177189).

The spelling of 85070131 in words is "eighty-five million, seventy thousand, one hundred thirty-one".