86743031 has 4 divisors (see below), whose sum is σ = 89734200. Its totient is φ = 83751864.

The previous prime is 86743009. The next prime is 86743067. The reversal of 86743031 is 13034768.

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 86743031 - 2²² = 82548727 is a prime.

It is a super-2 number, since 2×86743031² = 15048706854133922, 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 (86743001) 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, 1495541 + ... + 1495598.

It is an arithmetic number, because the mean of its divisors is an integer number (22433550).

Almost surely, 2^86743031 is an apocalyptic number.

86743031 is a deficient number, since it is larger than the sum of its proper divisors (2991169).

86743031 is a wasteful number, since it uses less digits than its factorization.

86743031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991168.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 86743031 is about 9313.5938820629. The cubic root of 86743031 is about 442.6680706844.

Adding to 86743031 its reverse (13034768), we get a palindrome (99777799).

The spelling of 86743031 in words is "eighty-six million, seven hundred forty-three thousand, thirty-one".