78793231 has 8 divisors (see below), whose sum is σ = 86808528. Its totient is φ = 70920000.

The previous prime is 78793199. The next prime is 78793237. The reversal of 78793231 is 13239787.

78793231 = T₁₇₆ + T₁₇₇ + ... + T₇₈₁.

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 78793231 - 2⁵ = 78793199 is a prime.

It is a super-3 number, since 3×78793231³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78793237) 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, 34350 + ... + 36571.

It is an arithmetic number, because the mean of its divisors is an integer number (10851066).

Almost surely, 2^78793231 is an apocalyptic number.

78793231 is a deficient number, since it is larger than the sum of its proper divisors (8015297).

78793231 is a wasteful number, since it uses less digits than its factorization.

78793231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71033.

The product of its digits is 63504, while the sum is 40.

The square root of 78793231 is about 8876.5551313559. Note that the first 3 decimals coincide. The cubic root of 78793231 is about 428.7093642409.

The spelling of 78793231 in words is "seventy-eight million, seven hundred ninety-three thousand, two hundred thirty-one".