86312121 has 16 divisors (see below), whose sum is σ = 132562944. Its totient is φ = 48931344.

The previous prime is 86312099. The next prime is 86312131. The reversal of 86312121 is 12121368.

It is not a de Polignac number, because 86312121 - 2⁵ = 86312089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86312091 and 86312100.

It is not an unprimeable number, because it can be changed into a prime (86312131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13515 + ... + 18848.

It is an arithmetic number, because the mean of its divisors is an integer number (8285184).

Almost surely, 2^86312121 is an apocalyptic number.

It is an amenable number.

86312121 is a deficient number, since it is larger than the sum of its proper divisors (46250823).

86312121 is a wasteful number, since it uses less digits than its factorization.

86312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32500.

The product of its digits is 576, while the sum is 24.

The square root of 86312121 is about 9290.4316907235. The cubic root of 86312121 is about 441.9338451934.

Adding to 86312121 its reverse (12121368), we get a palindrome (98433489).

The spelling of 86312121 in words is "eighty-six million, three hundred twelve thousand, one hundred twenty-one".