85342031 has 4 divisors (see below), whose sum is σ = 86952312. Its totient is φ = 83731752.

The previous prime is 85342003. The next prime is 85342051. The reversal of 85342031 is 13024358.

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-85342031 is a prime.

It is a super-2 number, since 2×85342031² = 14566524510409922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85342051) 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, 805061 + ... + 805166.

It is an arithmetic number, because the mean of its divisors is an integer number (21738078).

Almost surely, 2^85342031 is an apocalyptic number.

85342031 is a deficient number, since it is larger than the sum of its proper divisors (1610281).

85342031 is a wasteful number, since it uses less digits than its factorization.

85342031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610280.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 85342031 is about 9238.0750700565. The cubic root of 85342031 is about 440.2719238562.

Adding to 85342031 its reverse (13024358), we get a palindrome (98366389).

The spelling of 85342031 in words is "eighty-five million, three hundred forty-two thousand, thirty-one".