78097311 has 16 divisors (see below), whose sum is σ = 115853920. Its totient is φ = 51995520.

The previous prime is 78097309. The next prime is 78097321. The reversal of 78097311 is 11379087.

It is not a de Polignac number, because 78097311 - 2¹ = 78097309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78097321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26151 + ... + 28983.

It is an arithmetic number, because the mean of its divisors is an integer number (7240870).

Almost surely, 2^78097311 is an apocalyptic number.

78097311 is a deficient number, since it is larger than the sum of its proper divisors (37756609).

78097311 is a wasteful number, since it uses less digits than its factorization.

78097311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863 (or 3857 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 78097311 is about 8837.2682996501. The cubic root of 78097311 is about 427.4434766759.

The spelling of 78097311 in words is "seventy-eight million, ninety-seven thousand, three hundred eleven".