77343313 has 4 divisors (see below), whose sum is σ = 77690368. Its totient is φ = 76996260.

The previous prime is 77343293. The next prime is 77343323. The reversal of 77343313 is 31334377.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31334377 = 167 ⋅187631.

It is a cyclic number.

It is not a de Polignac number, because 77343313 - 2¹³ = 77335121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77343323) 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 3 ways as a sum of consecutive naturals, for example, 173193 + ... + 173638.

It is an arithmetic number, because the mean of its divisors is an integer number (19422592).

Almost surely, 2^77343313 is an apocalyptic number.

It is an amenable number.

77343313 is a deficient number, since it is larger than the sum of its proper divisors (347055).

77343313 is a wasteful number, since it uses less digits than its factorization.

77343313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347054.

The product of its digits is 15876, while the sum is 31.

The square root of 77343313 is about 8794.5047046437. The cubic root of 77343313 is about 426.0634277779.

The spelling of 77343313 in words is "seventy-seven million, three hundred forty-three thousand, three hundred thirteen".