85311290 has 8 divisors (see below), whose sum is σ = 153560340. Its totient is φ = 34124512.

The previous prime is 85311263. The next prime is 85311299. The reversal of 85311290 is 9211358.

It can be written as a sum of positive squares in 2 ways, for example, as 85248289 + 63001 = 9233^2 + 251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85311299) 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, 4265555 + ... + 4265574.

Almost surely, 2^85311290 is an apocalyptic number.

85311290 is a deficient number, since it is larger than the sum of its proper divisors (68249050).

85311290 is a wasteful number, since it uses less digits than its factorization.

85311290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531136.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 85311290 is about 9236.4110995559. The cubic root of 85311290 is about 440.2190541489.

The spelling of 85311290 in words is "eighty-five million, three hundred eleven thousand, two hundred ninety".