78503231 has 8 divisors (see below), whose sum is σ = 82761600. Its totient is φ = 74257560.

The previous prime is 78503219. The next prime is 78503273. The reversal of 78503231 is 13230587.

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 78503231 - 2²⁶ = 11394367 is a prime.

It is a super-2 number, since 2×78503231² = 12325514554878722, 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 = 78503194 and 78503203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78503291) 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, 11246 + ... + 16836.

It is an arithmetic number, because the mean of its divisors is an integer number (10345200).

Almost surely, 2^78503231 is an apocalyptic number.

78503231 is a deficient number, since it is larger than the sum of its proper divisors (4258369).

78503231 is a wasteful number, since it uses less digits than its factorization.

78503231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6349.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 78503231 is about 8860.2049073371. The cubic root of 78503231 is about 428.1827599695.

The spelling of 78503231 in words is "seventy-eight million, five hundred three thousand, two hundred thirty-one".