86072131 has 2 divisors, whose sum is σ = 86072132. Its totient is φ = 86072130.

The previous prime is 86072123. The next prime is 86072149. The reversal of 86072131 is 13127068.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86072131 - 2³ = 86072123 is a prime.

It is a super-2 number, since 2×86072131² = 14816823469762322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86072131.

It is not a weakly prime, because it can be changed into another prime (86072531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43036065 + 43036066.

It is an arithmetic number, because the mean of its divisors is an integer number (43036066).

Almost surely, 2^86072131 is an apocalyptic number.

86072131 is a deficient number, since it is larger than the sum of its proper divisors (1).

86072131 is an equidigital number, since it uses as much as digits as its factorization.

86072131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 86072131 is about 9277.5067232528. The cubic root of 86072131 is about 441.5238674146.

Adding to 86072131 its reverse (13127068), we get a palindrome (99199199).

The spelling of 86072131 in words is "eighty-six million, seventy-two thousand, one hundred thirty-one".