85773031 has 2 divisors, whose sum is σ = 85773032. Its totient is φ = 85773030.

The previous prime is 85773013. The next prime is 85773043. The reversal of 85773031 is 13037758.

Together with previous prime (85773013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85773031 - 2¹¹ = 85770983 is a prime.

It is a super-2 number, since 2×85773031² = 14714025693853922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85773131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42886515 + 42886516.

It is an arithmetic number, because the mean of its divisors is an integer number (42886516).

Almost surely, 2^85773031 is an apocalyptic number.

85773031 is a deficient number, since it is larger than the sum of its proper divisors (1).

85773031 is an equidigital number, since it uses as much as digits as its factorization.

85773031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 85773031 is about 9261.3730623488. The cubic root of 85773031 is about 441.0118431697.

The spelling of 85773031 in words is "eighty-five million, seven hundred seventy-three thousand, thirty-one".