785432231 has 2 divisors, whose sum is σ = 785432232. Its totient is φ = 785432230.

The previous prime is 785432191. The next prime is 785432233. The reversal of 785432231 is 132234587.

It is a strong prime.

It is an emirp because it is prime and its reverse (132234587) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-785432231 is a prime.

It is a super-2 number, since 2×785432231² = 1233807578987274722, which contains 22 as substring.

Together with 785432233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 785432191 and 785432200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (785432233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392716115 + 392716116.

It is an arithmetic number, because the mean of its divisors is an integer number (392716116).

Almost surely, 2^785432231 is an apocalyptic number.

785432231 is a deficient number, since it is larger than the sum of its proper divisors (1).

785432231 is an equidigital number, since it uses as much as digits as its factorization.

785432231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 785432231 is about 28025.5638837116. The cubic root of 785432231 is about 922.6484142694.

The spelling of 785432231 in words is "seven hundred eighty-five million, four hundred thirty-two thousand, two hundred thirty-one".