77312003 has 4 divisors (see below), whose sum is σ = 77649840. Its totient is φ = 76974168.

The previous prime is 77311987. The next prime is 77312017. The reversal of 77312003 is 30021377.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77312003 - 2⁴ = 77311987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77312003.

It is not an unprimeable number, because it can be changed into a prime (77312023) 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, 168575 + ... + 169032.

It is an arithmetic number, because the mean of its divisors is an integer number (19412460).

Almost surely, 2^77312003 is an apocalyptic number.

77312003 is a deficient number, since it is larger than the sum of its proper divisors (337837).

77312003 is a wasteful number, since it uses less digits than its factorization.

77312003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337836.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 77312003 is about 8792.7244355774. The cubic root of 77312003 is about 426.0059272394.

The spelling of 77312003 in words is "seventy-seven million, three hundred twelve thousand, three".