16087277231 has 2 divisors, whose sum is σ = 16087277232. Its totient is φ = 16087277230.

The previous prime is 16087277209. The next prime is 16087277321. The reversal of 16087277231 is 13277278061.

Together with next prime (16087277321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16087277231 is a prime.

It is a super-2 number, since 2×16087277231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16087277131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8043638615 + 8043638616.

It is an arithmetic number, because the mean of its divisors is an integer number (8043638616).

Almost surely, 2^16087277231 is an apocalyptic number.

16087277231 is a deficient number, since it is larger than the sum of its proper divisors (1).

16087277231 is an equidigital number, since it uses as much as digits as its factorization.

16087277231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 16087277231 in words is "sixteen billion, eighty-seven million, two hundred seventy-seven thousand, two hundred thirty-one".