78710231 has 8 divisors (see below), whose sum is σ = 79657344. Its totient is φ = 77766840.

The previous prime is 78710213. The next prime is 78710237. The reversal of 78710231 is 13201787.

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 78710231 - 2¹⁰ = 78709207 is a prime.

It is a super-2 number, since 2×78710231² = 12390600928146722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78710194 and 78710203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78710237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80576 + ... + 81546.

It is an arithmetic number, because the mean of its divisors is an integer number (9957168).

Almost surely, 2^78710231 is an apocalyptic number.

78710231 is a deficient number, since it is larger than the sum of its proper divisors (947113).

78710231 is a wasteful number, since it uses less digits than its factorization.

78710231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 78710231 is about 8871.8786623804. The cubic root of 78710231 is about 428.5587786372.

The spelling of 78710231 in words is "seventy-eight million, seven hundred ten thousand, two hundred thirty-one".