80105311 has 16 divisors (see below), whose sum is σ = 99066240. Its totient is φ = 63681120.

The previous prime is 80105287. The next prime is 80105317. The reversal of 80105311 is 11350108.

It is a cyclic number.

It is not a de Polignac number, because 80105311 - 2¹⁵ = 80072543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80105317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12025 + ... + 17458.

It is an arithmetic number, because the mean of its divisors is an integer number (6191640).

Almost surely, 2^80105311 is an apocalyptic number.

80105311 is a deficient number, since it is larger than the sum of its proper divisors (18960929).

80105311 is a wasteful number, since it uses less digits than its factorization.

80105311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29526.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 80105311 is about 8950.1570377284. The cubic root of 80105311 is about 431.0759264963.

Adding to 80105311 its reverse (11350108), we get a palindrome (91455419).

The spelling of 80105311 in words is "eighty million, one hundred five thousand, three hundred eleven".