86211170431 has 4 divisors (see below), whose sum is σ = 86382564912. Its totient is φ = 86039775952.

The previous prime is 86211170371. The next prime is 86211170447. The reversal of 86211170431 is 13407111268.

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 86211170431 - 2⁷ = 86211170303 is a prime.

It is a super-2 number, since 2×86211170431² (a number of 23 digits) 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 (86211176431) 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, 85696486 + ... + 85697491.

It is an arithmetic number, because the mean of its divisors is an integer number (21595641228).

Almost surely, 2^86211170431 is an apocalyptic number.

86211170431 is a deficient number, since it is larger than the sum of its proper divisors (171394481).

86211170431 is a wasteful number, since it uses less digits than its factorization.

86211170431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171394480.

The product of its (nonzero) digits is 8064, while the sum is 34.

Adding to 86211170431 its reverse (13407111268), we get a palindrome (99618281699).

The spelling of 86211170431 in words is "eighty-six billion, two hundred eleven million, one hundred seventy thousand, four hundred thirty-one".