86502212731 has 4 divisors (see below), whose sum is σ = 94366050264. Its totient is φ = 78638375200.

The previous prime is 86502212689. The next prime is 86502212737. The reversal of 86502212731 is 13721220568.

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

It is not a de Polignac number, because 86502212731 - 2¹⁵ = 86502179963 is a prime.

It is a super-2 number, since 2×86502212731² (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 (86502212737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3931918750 + ... + 3931918771.

It is an arithmetic number, because the mean of its divisors is an integer number (23591512566).

Almost surely, 2^86502212731 is an apocalyptic number.

86502212731 is a deficient number, since it is larger than the sum of its proper divisors (7863837533).

86502212731 is a wasteful number, since it uses less digits than its factorization.

86502212731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863837532.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 86502212731 in words is "eighty-six billion, five hundred two million, two hundred twelve thousand, seven hundred thirty-one".