78731303 has 8 divisors (see below), whose sum is σ = 91211808. Its totient is φ = 66559104.

The previous prime is 78731299. The next prime is 78731309. The reversal of 78731303 is 30313787.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78731303 - 2² = 78731299 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 78731303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78731309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76526 + ... + 77547.

It is an arithmetic number, because the mean of its divisors is an integer number (11401476).

Almost surely, 2^78731303 is an apocalyptic number.

78731303 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

78731303 is a deficient number, since it is larger than the sum of its proper divisors (12480505).

78731303 is a wasteful number, since it uses less digits than its factorization.

78731303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154153.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 78731303 is about 8873.0661555068. The cubic root of 78731303 is about 428.5970192603.

The spelling of 78731303 in words is "seventy-eight million, seven hundred thirty-one thousand, three hundred three".