86320742731 has 4 divisors (see below), whose sum is σ = 86335863264. Its totient is φ = 86305622200.

The previous prime is 86320742707. The next prime is 86320742741. The reversal of 86320742731 is 13724702368.

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

It is a cyclic number.

It is not a de Polignac number, because 86320742731 - 2⁹ = 86320742219 is a prime.

It is a super-2 number, since 2×86320742731² (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 (86320742701) 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, 7551700 + ... + 7563121.

It is an arithmetic number, because the mean of its divisors is an integer number (21583965816).

Almost surely, 2^86320742731 is an apocalyptic number.

86320742731 is a deficient number, since it is larger than the sum of its proper divisors (15120533).

86320742731 is a wasteful number, since it uses less digits than its factorization.

86320742731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15120532.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 86320742731 in words is "eighty-six billion, three hundred twenty million, seven hundred forty-two thousand, seven hundred thirty-one".