78741231 has 8 divisors (see below), whose sum is σ = 106426800. Its totient is φ = 51774912.

The previous prime is 78741203. The next prime is 78741233. The reversal of 78741231 is 13214787.

It is a happy number.

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

It is not a de Polignac number, because 78741231 - 2¹¹ = 78739183 is a prime.

It is a super-2 number, since 2×78741231² = 12400362918790722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78741192 and 78741201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78741233) 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, 179556 + ... + 179993.

It is an arithmetic number, because the mean of its divisors is an integer number (13303350).

Almost surely, 2^78741231 is an apocalyptic number.

78741231 is a deficient number, since it is larger than the sum of its proper divisors (27685569).

78741231 is a wasteful number, since it uses less digits than its factorization.

78741231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359625.

The product of its digits is 9408, while the sum is 33.

The square root of 78741231 is about 8873.6255837172. The cubic root of 78741231 is about 428.6150338330.

The spelling of 78741231 in words is "seventy-eight million, seven hundred forty-one thousand, two hundred thirty-one".